https://extinctatlas.com/species/woolly-mammoth 2026-09-01 yearly 0.7 https://extinctatlas.com/media/mammoth-hero.webp Woolly Mammoth (Mammuthus primigenius) They lived not on endless ice, but in a wind-shaped grassland ecosystem. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/smilodon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/smilodon.webp Saber-toothed Cat (Smilodon fatalis) Its enormous canines were only part of the weapon; the real power lay in exceptionally strong forelimbs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dodo 2026-09-01 yearly 0.7 https://extinctatlas.com/media/dodo.webp Dodo (Raphus cucullatus) Flightlessness was not a failure, but the result of evolving on an island without large predators. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/trilobite 2026-09-01 yearly 0.7 https://extinctatlas.com/media/trilobite.webp Trilobites (Trilobita) They occupied seafloors for nearly 300 million years, and their compound eyes preserve secrets of early vision. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tyrannosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/tyrannosaurus.webp Tyrannosaurus (Tyrannosaurus rex) A deep skull, bone-crushing bite and keen senses made it one of the last giant theropods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/triceratops 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/triceratops.webp Triceratops (Triceratops horridus) Three horns and a broad frill formed a formidable display and defense system. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/stegosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/stegosaurus.webp Stegosaurus (Stegosaurus stenops) Tall back plates and a four-spiked tail made this low-browsing herbivore unmistakable. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/velociraptor 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/velociraptor.webp Velociraptor (Velociraptor mongoliensis) This turkey-sized feathered predator carried a raised sickle claw on each foot. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/spinosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/spinosaurus.webp Spinosaurus (Spinosaurus aegyptiacus) A sail-backed predator with dense bones and a paddle-like tail, adapted to life around water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ankylosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/ankylosaurus.webp Ankylosaurus (Ankylosaurus magniventris) Body armor and a heavy tail club turned a plant-eater into a walking fortress. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/parasaurolophus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/parasaurolophus.webp Parasaurolophus (Parasaurolophus walkeri) Its long hollow crest may have carried low calls across forests and floodplains. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaeopteryx 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/archaeopteryx.webp Archaeopteryx (Archaeopteryx lithographica) Feathers, wings, teeth and a long bony tail capture a mosaic of dinosaur and bird traits. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/quetzalcoatlus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/quetzalcoatlus.webp Quetzalcoatlus (Quetzalcoatlus northropi) One of the largest known flying animals stood as tall as a giraffe on the ground. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mosasaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/mosasaurus.webp Mosasaurus (Mosasaurus hoffmannii) A giant marine lizard propelled by a deep tail fin patrolled Late Cretaceous seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dunkleosteus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/dunkleosteus.webp Dunkleosteus (Dunkleosteus terrelli) Sharpened jaw plates replaced teeth in this heavily armored apex fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megalodon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/megalodon.webp Megalodon (Otodus megalodon) Its hand-sized teeth belonged to a giant shark specialized in hunting marine mammals. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/arthropleura 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/arthropleura.webp Arthropleura (Arthropleura armata) This many-segmented arthropod grew longer than a person in coal-swamp forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dimetrodon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/dimetrodon.webp Dimetrodon (Dimetrodon grandis) This sail-backed predator was closer to mammals than to dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lystrosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/lystrosaurus.webp Lystrosaurus (Lystrosaurus murrayi) A beaked, tusked survivor became extraordinarily common after Earth’s greatest mass extinction. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megatherium 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/megatherium.webp Giant Ground Sloth (Megatherium americanum) Standing on its hind legs, this elephant-sized sloth could reach high branches with huge claws. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/glyptodon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/glyptodon.webp Glyptodon (Glyptodon clavipes) A domed shell of fused armor protected this car-sized relative of armadillos. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megaloceros 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/megaloceros.webp Irish Elk (Megaloceros giganteus) The largest deer antlers known were seasonal structures for display and competition. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dire-wolf 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/dire-wolf.webp Dire Wolf (Aenocyon dirus) A heavy-jawed canid hunted the large herbivores of Ice Age America. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thylacine 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/thylacine.webp Thylacine (Thylacinus cynocephalus) Australia’s striped marsupial predator survived longest in Tasmania. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/passenger-pigeon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/passenger-pigeon.webp Passenger Pigeon (Ectopistes migratorius) Flocks once darkened the sky, yet abundance could not protect a species dependent on immense colonies. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/great-auk 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/great-auk.webp Great Auk (Pinguinus impennis) This flightless North Atlantic seabird used its wings as powerful underwater paddles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/stellers-sea-cow 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/stellers-sea-cow.webp Steller’s Sea Cow (Hydrodamalis gigas) This enormous, slow sirenian grazed kelp in cold shallow water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/south-island-giant-moa 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/south-island-giant-moa.webp South Island Giant Moa (Dinornis robustus) One of the tallest birds ever known browsed forests without wings of any kind. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/haasts-eagle 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/haasts-eagle.webp Haast’s Eagle (Hieraaetus moorei) The largest known eagle evolved to strike moa many times its own weight. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/anomalocaris 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/anomalocaris.webp Anomalocaris (Anomalocaris canadensis) A meter-long swimmer with grasping frontal appendages was a giant of Cambrian seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/opabinia 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/opabinia.webp Opabinia (Opabinia regalis) Five eyes and a grasping proboscis made this small swimmer one of the Cambrian’s strangest forms. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hallucigenia 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/hallucigenia.webp Hallucigenia (Hallucigenia sparsa) Paired spines guarded a soft-bodied walker once reconstructed upside down. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/jaekelopterus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/jaekelopterus.webp Jaekelopterus (Jaekelopterus rhenaniae) This giant sea scorpion may have exceeded two meters in length. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cameroceras 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/cameroceras.webp Cameroceras (Cameroceras trentonense) A long straight shell housed one of the largest predators of Ordovician seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/helicoprion 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/helicoprion.webp Helicoprion (Helicoprion davisii) Its spiral tooth whorl worked like a permanent slicing blade inside the lower jaw. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/edestus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/edestus.webp Edestus (Edestus heinrichi) Opposing tooth blades projected from its jaws like curved shears. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eusthenopteron 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/eusthenopteron.webp Eusthenopteron (Eusthenopteron foordi) Bones inside its fleshy fins foreshadowed the limb pattern of land vertebrates. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/inostrancevia 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/inostrancevia.webp Inostrancevia (Inostrancevia alexandri) Long saber canines armed one of the largest predators of the latest Permian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/scutosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/scutosaurus.webp Scutosaurus (Scutosaurus karpinskii) A barrel-bodied herbivore carried bony armor beneath its skin. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/allosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/allosaurus.webp Allosaurus (Allosaurus fragilis) A lightweight skull and serrated teeth equipped this large predator for repeated slashing bites. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/brachiosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/brachiosaurus.webp Brachiosaurus (Brachiosaurus altithorax) Long forelimbs lifted its shoulders and neck toward the Jurassic canopy. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diplodocus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/diplodocus.webp Diplodocus (Diplodocus carnegii) A whip-like tail balanced an extremely long neck on this lightly built giant. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/carnotaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/carnotaurus.webp Carnotaurus (Carnotaurus sastrei) Brow horns, a deep skull and extremely reduced arms marked this fast abelisaurid. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/giganotosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/giganotosaurus.webp Giganotosaurus (Giganotosaurus carolinii) A giant narrow-skulled theropod shared its world with immense sauropods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/deinonychus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/deinonychus.webp Deinonychus (Deinonychus antirrhopus) A stiff tail, grasping hands and enlarged foot claw made an agile feathered hunter. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/oviraptor 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/oviraptor.webp Oviraptor (Oviraptor philoceratops) The supposed egg thief was found above a nest that probably contained its own young. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/therizinosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/therizinosaurus.webp Therizinosaurus (Therizinosaurus cheloniformis) Meter-long hand claws belonged to a tall, feathered, pot-bellied herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pachycephalosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/pachycephalosaurus.webp Pachycephalosaurus (Pachycephalosaurus wyomingensis) A thick dome of bone crowned the skull of this two-legged herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/iguanodon 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/iguanodon.webp Iguanodon (Iguanodon bernissartensis) A conical thumb spike and batteries of chewing teeth equipped this adaptable herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/protoceratops 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/protoceratops.webp Protoceratops (Protoceratops andrewsi) This sheep-sized horned dinosaur carried a deep beak and broad neck frill. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/coelophysis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/coelophysis.webp Coelophysis (Coelophysis bauri) A slender, hollow-boned hunter was among the early successful dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/plateosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/plateosaurus.webp Plateosaurus (Plateosaurus trossingensis) This early long-necked herbivore could rear upright but mainly walked on two legs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dilophosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/dilophosaurus.webp Dilophosaurus (Dilophosaurus wetherilli) Paired head crests advertised this agile predator; there is no evidence for venom or a neck frill. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/microraptor 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/microraptor.webp Microraptor (Microraptor gui) Long flight feathers on all four limbs formed a remarkable aerial surface. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/yi-qi 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/yi-qi.webp Yi qi (Yi qi) Membranous wings supported by long fingers and a rod-like styliform element projecting from the wrist differed from the feathered wings of birds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pteranodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pteranodon.webp Pteranodon (Pteranodon longiceps) Long wings and a toothless beak carried this pterosaur over an inland sea. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/elasmosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/elasmosaurus.webp Elasmosaurus (Elasmosaurus platyurus) An extraordinarily long neck let this marine reptile approach prey with a small head. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ichthyosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/ichthyosaurus.webp Ichthyosaurus (Ichthyosaurus communis) A streamlined reptile converged on the body plan of dolphins while retaining enormous eyes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/liopleurodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/liopleurodon.webp Liopleurodon (Liopleurodon ferox) A broad skull and four powerful flippers belonged to a leading Jurassic marine predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/titanoboa 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/titanoboa.webp Titanoboa (Titanoboa cerrejonensis) The largest known snake moved through hot tropical swamps after the dinosaurs vanished. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/phorusrhacos 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/phorusrhacos.webp Terror Bird (Phorusrhacos longissimus) A tall flightless predator used a deep hooked beak to strike prey on the ground. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/argentavis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/argentavis.webp Argentavis (Argentavis magnificens) One of the largest flying birds rode rising air above open South American plains. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/paraceratherium 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/paraceratherium.webp Paraceratherium (Paraceratherium transouralicum) The largest known land mammal was a hornless rhinoceros relative built to browse high foliage. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/uintatherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/uintatherium.webp Uintatherium (Uintatherium anceps) Knob-like skull horns and long canines crowned this rhinoceros-sized herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/basilosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/basilosaurus.webp Basilosaurus (Basilosaurus isis) This long-bodied early whale still carried tiny external hind limbs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/livyatan 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/livyatan.webp Livyatan (Livyatan melvillei) Huge teeth in both jaws armed a macropredatory sperm whale. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thylacosmilus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/thylacosmilus.webp Thylacosmilus (Thylacosmilus atrox) Ever-growing saber canines evolved independently in this marsupial relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/macrauchenia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/macrauchenia.webp Macrauchenia (Macrauchenia patachonica) This long-necked hoofed mammal belonged to a uniquely South American lineage. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/toxodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/toxodon.webp Toxodon (Toxodon platensis) A heavy-bodied native ungulate grazed and browsed beside Ice Age giants. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/elasmotherium 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/elasmotherium.webp Elasmotherium (Elasmotherium sibiricum) This enormous grazing rhinoceros probably supported a large horn on its forehead. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/coelodonta 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/coelodonta.webp Woolly Rhinoceros (Coelodonta antiquitatis) A thick coat and flattened horn equipped this rhinoceros for cold, dry mammoth steppe. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/quagga 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/quagga.webp Quagga (Equus quagga quagga) This plains zebra had bold stripes in front fading into a plain brown rear body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aurochs 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/aurochs.webp Aurochs (Bos primigenius) The powerful wild ancestor of domestic cattle once ranged across three continents. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/caribbean-monk-seal 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/caribbean-monk-seal.webp Caribbean Monk Seal (Neomonachus tropicalis) The only seal endemic to the Caribbean rested and bred on warm sandy shores. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/falkland-islands-wolf 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/falkland-islands-wolf.webp Falkland Islands Wolf (Dusicyon australis) This unusually tame island canid was the Falklands’ only native land mammal. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/carolina-parakeet 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/carolina-parakeet.webp Carolina Parakeet (Conuropsis carolinensis) Bright green flocks once made this the only parrot native to the eastern United States. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/huia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/huia.webp Huia (Heteralocha acutirostris) Males and females had dramatically different bills but foraged as a pair. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/elephant-bird 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/elephant-bird.webp Elephant Bird (Aepyornis maximus) These massive flightless birds laid the largest eggs known from any vertebrate. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pyrenean-ibex 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pyrenean-ibex.webp Pyrenean Ibex (Capra pyrenaica pyrenaica) The bucardo was the first extinct animal briefly brought back as a clone—and the first to go extinct twice. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pikaia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pikaia.webp Pikaia (Pikaia gracilens) A slender body preserves repeated muscle blocks and internal traces important for interpreting early chordates. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/wiwaxia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/wiwaxia.webp Wiwaxia (Wiwaxia corrugata) Rows of scales and long spines armored this small seafloor grazer. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tiktaalik 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/tiktaalik.webp Tiktaalik (Tiktaalik roseae) A flat-headed fish with a mobile neck and wrist-like fin bones approached the anatomy of early tetrapods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/meganeura 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/meganeura.webp Meganeura (Meganeura monyi) This griffinfly’s wings spanned roughly seventy centimeters above Carboniferous forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/moschops 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/moschops.webp Moschops (Moschops capensis) A thick skull roof capped this heavy plant-eating mammal relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/herrerasaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/herrerasaurus.webp Herrerasaurus (Herrerasaurus ischigualastensis) One of the earliest large dinosaurs was a lightly built two-legged predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/baryonyx 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/baryonyx.webp Baryonyx (Baryonyx walkeri) A crocodile-like snout and huge thumb claw equipped this theropod to catch fish and other prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/psittacosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/psittacosaurus.webp Psittacosaurus (Psittacosaurus mongoliensis) A deep parrot-like beak helped this early horned dinosaur process plants; this record distinguishes P. mongoliensis from other specimens of the genus. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/edmontosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/edmontosaurus.webp Edmontosaurus (Edmontosaurus annectens) A broad duck bill and dense dental batteries processed huge amounts of vegetation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nothosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/nothosaurus.webp Nothosaurus (Nothosaurus mirabilis) A long-necked coastal reptile paddled through shallow Triassic seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kronosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/kronosaurus.webp Kronosaurus (Kronosaurus queenslandicus) A massive pliosaur skull powered attacks on large marine prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hatzegopteryx 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/hatzegopteryx.webp Hatzegopteryx (Hatzegopteryx thambema) A giant pterosaur with a robust neck stalked an island populated by dwarf dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/chalicotherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/chalicotherium.webp Chalicotherium (Chalicotherium goldfussi) Long clawed forelimbs made this horse relative walk on its knuckles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/daeodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/daeodon.webp Daeodon (Daeodon shoshonensis) A huge deep-skulled omnivore belonged to the entelodonts, not to true pigs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/doedicurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/doedicurus.webp Doedicurus (Doedicurus clavicaudatus) A spiked tail club completed the armor of this giant glyptodont. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megalania 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/megalania.webp Megalania (Varanus priscus) The largest known terrestrial lizard was a giant relative of monitor lizards. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/procoptodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/procoptodon.webp Giant Short-faced Kangaroo (Procoptodon goliah) A broad face, forward-looking eyes and single-toed feet distinguished this giant kangaroo. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/castoroides 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/castoroides.webp Giant Beaver (Castoroides ohioensis) This black-bear-sized beaver had ridged teeth and depended on extensive wetlands. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/chinese-paddlefish 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/chinese-paddlefish.webp Chinese Paddlefish (Psephurus gladius) One of the world’s largest freshwater fish migrated the length of the Yangtze. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/labrador-duck 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/labrador-duck.webp Labrador Duck (Camptorhynchus labradorius) This small sea duck had a specialized bill for feeding in shallow coastal water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/japanese-sea-lion 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/japanese-sea-lion.webp Japanese Sea Lion (Zalophus japonicus) This large coastal sea lion bred on rocky islands across the Sea of Japan. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eurypterus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/eurypterus.webp Eurypterus (Eurypterus remipes) Paddle-shaped hind limbs carried this sea scorpion through shallow coastal water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bothriolepis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/bothriolepis.webp Bothriolepis (Bothriolepis canadensis) Bony armor enclosed its head and chest while jointed pectoral appendages steadied it on the bottom. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ichthyostega 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/ichthyostega.webp Ichthyostega (Ichthyostega stensioei) Weight-bearing limbs accompanied a fish-like tail in an animal still deeply tied to water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hylonomus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/hylonomus.webp Hylonomus (Hylonomus lyelli) This tiny insect hunter belonged to an early generation of vertebrates freed from laying eggs in water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/edaphosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/edaphosaurus.webp Edaphosaurus (Edaphosaurus pogonias) Crossbars projected from the spines of its tall sail above a broad plant-processing body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/argentinosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/argentinosaurus.webp Argentinosaurus (Argentinosaurus huinculensis) A handful of colossal vertebrae and limb bones indicate one of the largest land animals known. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/utahraptor 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/utahraptor.webp Utahraptor (Utahraptor ostrommaysorum) This huge, robust dromaeosaur used strength and a curved second-toe claw to control prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/deinocheirus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/deinocheirus.webp Deinocheirus (Deinocheirus mirificus) Huge arms, a broad bill, a tall back and wide feet formed one of the strangest dinosaur silhouettes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/amargasaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/amargasaurus.webp Amargasaurus (Amargasaurus cazaui) Two rows of elongated neck spines made its profile unique, though their soft-tissue covering remains debated. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sarcosuchus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/sarcosuchus.webp Sarcosuchus (Sarcosuchus imperator) This long-snouted armored crocodyliform was not a direct ancestor of living crocodiles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/andrewsarchus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/andrewsarchus.webp Andrewsarchus (Andrewsarchus mongoliensis) Nearly everything known directly comes from one enormous skull, leaving the body unusually uncertain. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megacerops 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/megacerops.webp Megacerops (Megacerops coloradensis) It resembled a rhinoceros but belonged to the extinct brontotheres and carried paired nasal horns. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sivatherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/sivatherium.webp Sivatherium (Sivatherium giganteum) A massive body, broad feet and four ossicones made this giraffid resemble both deer and cattle. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/homotherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/homotherium.webp Scimitar-toothed Cat (Homotherium serum) Short blade-like canines, long forelimbs and a sloping back suited pursuit of large prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cave-lion 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cave-lion.webp Cave Lion (Panthera spelaea) Ice Age art usually shows this immense cat without the heavy mane of many modern male lions. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nuralagus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/nuralagus.webp Menorcan Giant Rabbit (Nuralagus rex) Without large predators, this heavy island rabbit evolved small ears and lost efficient hopping. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pinta-tortoise 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pinta-tortoise.webp Pinta Island Tortoise (Chelonoidis abingdonii) A saddle-backed shell and long neck reached high vegetation; the last known individual died in 2012. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/golden-toad 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/golden-toad.webp Golden Toad (Incilius periglenes) Brilliant orange males gathered briefly each rainy season within a tiny highland range. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gastric-brooding-frog 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/gastric-brooding-frog.webp Southern Gastric-brooding Frog (Rheobatrachus silus) Females swallowed fertilized eggs, suppressed stomach acid and released developed froglets from the mouth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/christmas-island-pipistrelle 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/christmas-island-pipistrelle.webp Christmas Island Pipistrelle (Pipistrellus murrayi) This palm-sized insect bat fell from island-wide abundance to a final acoustic signal in 2009. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cooksonia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cooksonia.webp Cooksonia (Cooksonia pertoni) Leafless stems only centimeters tall held spore capsules at their tips, marking an early step inland. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rhynia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/rhynia.webp Rhynia (Rhynia gwynne-vaughanii) Naked upright axes rose from creeping rhizomes, preserved cell by cell by silica-rich hot springs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaeopteris 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/archaeopteris.webp Archaeopteris (Archaeopteris halliana) It grew true wood and a tree crown but still reproduced by spores, helping create Earth's first broad forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lepidodendron 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/lepidodendron.webp Lepidodendron (Lepidodendron aculeatum) A straight trunk patterned with diamond leaf scars forked only high above the Carboniferous mire. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/calamites 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/calamites.webp Calamites (Calamites suckowii) Casts of jointed stems record large horsetail relatives; Calamites suckowii does not automatically name a plant with all organs known. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/medullosa 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/medullosa.webp Medullosa (Medullosa noei) Woody stems carried immense fernlike fronds, yet seeds grew among the foliage of this vanished seed fern. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/glossopteris 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/glossopteris.webp Glossopteris (Glossopteris browniana) Tongue-shaped leaves across the southern continents became important evidence that Gondwana was once united. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/williamsonia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/williamsonia.webp Williamsonia (Williamsonia gigas) Flower-like reproductive organs nestled among cycad-like leaves, but this bennettitalean was not a flowering plant. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nilssonia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/nilssonia.webp Nilssonia (Nilssonia orientalis) Long leaves divided into broad segments formed part of the cycadophyte layer beneath Jurassic trees. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tempskya 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/tempskya.webp Tempskya (Tempskya rossica) What looked like one trunk was a false stem woven from many small axes and adventitious roots. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaefructus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/archaefructus.webp Archaefructus (Archaefructus liaoningensis) Elongated aquatic stems bore petal-less reproductive structures important to debates about early flowering plants. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/caytonia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/caytonia.webp Caytonia (Caytonia nathorstii) Curved cupules containing ovules hung beneath compound leaves in this puzzling seed plant. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saint-helena-olive 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/saint-helena-olive.webp Saint Helena Olive (Nesiota elliptica) It was not a true olive; the last wild tree died in 1994 and its last cultivated descendant in 2003. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/chilean-sandalwood 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/chilean-sandalwood.webp Chilean Sandalwood (Santalum fernandezianum) Demand for fragrant wood reduced this island tree to a final individual recorded in 1908. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/phillip-island-glory-pea 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/phillip-island-glory-pea.webp Phillip Island Glory Pea (Streblorrhiza speciosa) Pink-purple pea flowers once carried this monotypic island plant into European glasshouses. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cry-violet 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cry-violet.webp Cry Violet (Viola cryana) This violet occupied one small patch of pale limestone before quarrying removed its habitat. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tullimonstrum 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/tullimonstrum.webp Tully Monster (Tullimonstrum gregarium) Eyes sat at the ends of a crossbar and a long proboscis ended in a toothed grasping organ. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/estemmenosuchus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/estemmenosuchus.webp Estemmenosuchus (Estemmenosuchus uralensis) Paired bony bosses formed a rough crown on the skull of this large, probably plant-eating therapsid. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/shonisaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/shonisaurus.webp Shonisaurus (Shonisaurus popularis) This roughly fifteen-meter ichthyosaur had a long narrow snout and four flippers. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/arsinoitherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/arsinoitherium.webp Arsinoitherium (Arsinoitherium zitteli) Two enormous hollow nasal horns and a smaller rear pair belonged to an embrithopod, not a rhinoceros. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aglaophyton 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/aglaophyton.webp Aglaophyton (Aglaophyton major) Leafless axes rose in stands from creeping stems; conducting cells were present, but true vascular tissue was not. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/horneophyton 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/horneophyton.webp Horneophyton (Horneophyton lignieri) Short axes carried forked sporangia above corm-like bases that could resprout on a repeatedly flooded hot-spring surface. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/asteroxylon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/asteroxylon.webp Asteroxylon (Asteroxylon mackiei) Veinless leaf-like flaps covered its axes, while star-shaped xylem supplied shoots that rose nearly half a meter. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/baragwanathia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/baragwanathia.webp Baragwanathia (Baragwanathia longifolia) Branches more than a meter long carried dense narrow microphylls, far more elaborate than most naked-stemmed plants of its age. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/psilophyton 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/psilophyton.webp Psilophyton (Psilophyton dawsonii) Naked axes forked repeatedly, their fertile tips curling inward and carrying paired elongated sporangia. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/zosterophyllum 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/zosterophyllum.webp Zosterophyllum (Zosterophyllum myretonianum) Two rows of kidney-shaped sporangia lined curved branch tips like the teeth of an unfinished botanical zipper. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sigillaria 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/sigillaria.webp Sigillaria (Sigillaria brardii) Vertical rows of leaf scars stamped the tall trunk, beneath a crown of sparse branches and grasslike microphylls. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/neuropteris 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/neuropteris.webp Neuropteris (Neuropteris ovata) Rounded pinnules carried fanlike veins and looked fernlike, yet immense seeds grew among the fronds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cordaites 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cordaites.webp Cordaites (Cordaites principalis) Clusters of long strap-shaped leaves crowned woody trees from an extinct gymnosperm lineage near early conifers. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sphenophyllum 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/sphenophyllum.webp Sphenophyllum (Sphenophyllum emarginatum) Six wedge-shaped leaves encircled each node of a slender stem that trailed across the ground or climbed larger trees. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pentoxylon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pentoxylon.webp Pentoxylon (Pentoxylon sahnii) Several separate woody columns occupied one stem beneath clusters of long leaves and unusual male and female organs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cycadeoidea 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cycadeoidea.webp Cycadeoidea (Cycadeoidea gigantea) A stout barrel-shaped trunk held a pinnate crown and many flower-like bisexual reproductive structures among old leaf bases. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cladophlebis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cladophlebis.webp Cladophlebis (Cladophlebis denticulata) Finely pinnate fronds carpeted Jurassic understories, each toothed leaflet crossed by repeatedly branching veins. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ginkgo-cranei 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/ginkgo-cranei.webp Crane's Ginkgo (Ginkgo cranei) Fan-shaped leaves and paired ovules continued the ginkgo body plan in a species that did not survive to the present. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/araucaria-mirabilis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/araucaria-mirabilis.webp Araucaria mirabilis (Araucaria mirabilis) Tall conifers bore nearly spherical cones whose internal scales and ovules were silicified by volcanic landscapes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saint-helena-ebony 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/saint-helena-ebony.webp Saint Helena Dwarf Ebony (Trochetiopsis melanoxylon) Silvery hairy leaves and small pale flowers once covered dry slopes; the last reliable collection was made in 1771. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/falls-ohio-scurfpea 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/falls-ohio-scurfpea.webp Falls-of-the-Ohio Scurfpea (Orbexilum stipulatum) Purple pea flowers grew on one limestone river island, with the final herbarium collection made in 1881. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/maui-hau-kuahiwi 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/maui-hau-kuahiwi.webp Maui Hau Kuahiwi (Hibiscadelphus wilderianus) The only scientifically recorded tree bore curved yellow-green tubular flowers probably adapted to Hawaiian honeycreepers. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/wailupe-treecotton 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/wailupe-treecotton.webp Wailupe Valley Treecotton (Kokia lanceolata) Narrow leaves and hibiscus-like red flowers were confined to southeastern Oʻahu and vanished within decades of discovery. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/adams-mistletoe 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/adams-mistletoe.webp Adams's Mistletoe (Trilepidea adamsii) Red-striped yellow-green tubular flowers opened among fleshy paired leaves; the last reliable sighting was in 1954. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dickinsonia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/dickinsonia.webp Dickinsonia (Dickinsonia costata) Its flat oval body moved across microbial mats like a rhythmically quilted cushion, leaving feeding traces behind. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/spriggina 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/spriggina.webp Spriggina (Spriggina floundersi) A horseshoe-shaped front led a body of offset leaflike units, giving it the appearance of a flattened soft worm. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/charnia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/charnia.webp Charnia (Charnia masoni) A featherlike body of repeating branches was anchored by a disc in deep water, yet it had neither chlorophyll nor a mouth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kimberella 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/kimberella.webp Kimberella (Kimberella quadrata) Its low oval body crawled across microbial mats while a front feeding structure left fan-shaped sets of scratches. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/marrella 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/marrella.webp Marrella (Marrella splendens) Two pairs of curved head spines, long antennae and dozens of fine legs made this two-centimeter arthropod exquisitely elaborate. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ottoia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/ottoia.webp Ottoia (Ottoia prolifica) Its stout body hid in a U-shaped burrow while a spiny, hook-studded throat could turn inside out to seize food. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sacabambaspis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/sacabambaspis.webp Sacabambaspis (Sacabambaspis janvieri) A broad head shield enclosed its front half, with forward-set eyes and a flexible tail behind the armored box. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hyneria 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/hyneria.webp Hyneria (Hyneria lindae) This giant lobe-finned predator used fanglike teeth to ambush prey, while its fin skeleton followed a tetrapod-like pattern. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cotylorhynchus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cotylorhynchus.webp Cotylorhynchus (Cotylorhynchus romeri) A tiny head joined a barrel-shaped giant body whose broad ribs enclosed a vast plant-fermenting digestive system. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tanystropheus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/tanystropheus.webp Tanystropheus (Tanystropheus hydroides) Thirteen extremely elongated vertebrae formed a neck as long as half the body, while the skull snapped at fish and cephalopods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eoraptor 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/eoraptor.webp Eoraptor (Eoraptor lunensis) A lightly built one-meter animal ran on two legs with both sharp and leaf-shaped teeth in its jaws. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mononykus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/mononykus.webp Mononykus (Mononykus olecranus) Each tiny forearm ended in one stout main claw, perhaps used to tear open insect nests like a modern anteater. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rhamphorhynchus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/rhamphorhynchus.webp Rhamphorhynchus (Rhamphorhynchus muensteri) Needle teeth lined long jaws while a diamond-shaped membrane at the stiff tail tip helped control flight above island seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/leedsichthys 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/leedsichthys.webp Leedsichthys (Leedsichthys problematicus) This giant bony fish opened a broad mouth and strained plankton through dense gill rakers, much like a whale shark. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dakosaurus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/dakosaurus.webp Dakosaurus (Dakosaurus maximus) A short deep skull carried serrated blades, while this marine crocodile's body had transformed into four flippers and a fishlike tail. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ambulocetus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/ambulocetus.webp Ambulocetus (Ambulocetus natans) Strong limbs could still bear weight, yet long feet paddled through water and the ear region was adapting to underwater sound. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/desmostylus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/desmostylus.webp Desmostylus (Desmostylus hesperus) Bundles of enamel-wrapped tooth columns and broad limbs helped it crop aquatic plants in tidal flats and shallow water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/astrapotherium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/astrapotherium.webp Astrapotherium (Astrapotherium magnum) Rear-shifted nostrils and four tusks document a distinctive skull; a short trunk is a soft-tissue reconstruction inferred from the bones. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diprotodon 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/diprotodon.webp Diprotodon (Diprotodon optatum) This rhinoceros-sized marsupial clipped plants with two forward incisors and moved between seasonal water sources. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/genyornis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/genyornis.webp Genyornis (Genyornis newtoni) This two-meter flightless bird had a deep jaw and powerful legs, probably feeding on soft leaves, fruit and shoots. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/delitzschala 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/delitzschala.webp Delitzschala (Delitzschala bitterfeldensis) A patterned wing only about two centimeters across pushes the secure record of insect flight into the Early Carboniferous. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/stenodictya 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/stenodictya.webp Lobed Stenodictya (Stenodictya lobata) Beyond four wings packed with netlike veins, the thorax carried a pair of small immobile winglets. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mazothairos 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/mazothairos.webp Giant Mazothairos (Mazothairos enormis) Scaling from the surviving giant wing suggests a four-winged span near half a meter, among the largest palaeodictyopterans known. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/meganeuropsis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/meganeuropsis.webp Permian Giant Griffinfly (Meganeuropsis permiana) The largest estimates reach a 71-centimeter wingspan, placing it among the biggest flying insects in Earth history. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dunbaria 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/dunbaria.webp Dunbaria (Dunbaria fasciipennis) Banded dark patterns remain on its fossil wings, returning color pattern to a Permian insect rather than a blank outline. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/permotipula 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/permotipula.webp Permian Crane-fly Mimic (Permotipula patricia) A wing resembling that of a crane fly was once treated as an early dipteran clue, but its true affinity remains disputed. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/liassophlebia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/liassophlebia.webp Magnificent Liassic Damsel-dragonfly (Liassophlebia magnifica) Four broad, densely veined wings carried this stem dragonfly on patrol above Jurassic lakeshores. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaboilus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/archaboilus.webp Musical Jurassic Katydid (Archaboilus musicus) The male forewing preserves its file finely enough for researchers to reconstruct a pure call near 6.4 kilohertz. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kalligramma 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/kalligramma.webp Haeckel's Kalligrammatid (Kalligramma haeckeli) Huge eyespots, broad wings and an elongate mouthpart created a butterfly-like insect before butterflies flourished. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/makarkinia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/makarkinia.webp Adams's Giant Lacewing (Makarkinia adamsi) Scaling from the surviving wing fragment suggests a wing as long as 16 centimeters, among the largest lacewings known. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/juracimbrophlebia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/juracimbrophlebia.webp Ginkgo-mimicking Hangingfly (Juracimbrophlebia ginkgofolia) Four lobed wings nearly match ginkgoalean leaves from the same bed, rare evidence of deep-time leaf mimicry. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pseudopulex 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/pseudopulex.webp Jurassic Flea-like Ectoparasite (Pseudopulex jurassicus) About 17 millimeters long and unable to jump, it carried serrated piercing mouthparts far larger than those of modern fleas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saurophthirus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/saurophthirus.webp Exquisite Saurophthirus (Saurophthirus exquisitus) Broad pads at the tips of long legs could grip a smooth wing membrane, suggesting a possible life on pterosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/santanmantis 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/santanmantis.webp Santana Mantis (Santanmantis axelrodi) Only about a centimeter long, it already folded spine-lined grasping forelegs beneath its chest. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cretoparacucujus 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/cretoparacucujus.webp Cycad-pollinating Beetle (Cretoparacucujus cycadophilus) Cycad pollen lies beside it in amber, and its jaws bear small specialized pits for transporting pollen. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/titanomyrma-gigantea 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/titanomyrma-gigantea.webp Giant Titan Ant (Titanomyrma gigantea) Queens reached about seven centimeters long with a 16-centimeter wingspan, among the largest hymenopterans known. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/prodryas-persephone 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/prodryas-persephone.webp Persephone Butterfly (Prodryas persephone) A nearly complete impression preserves venation, legs, antennae and mouthparts, making it one of the finest fossil butterflies. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeovespa-florissantia 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/palaeovespa-florissantia.webp Florissant Fossil Wasp (Palaeovespa florissantia) This robust fossil vespid combines traits recalling modern hornets and paper wasps, and may already have lived socially. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eophyllium 2026-09-02 yearly 0.7 https://extinctatlas.com/media/species/eophyllium.webp Messel Dawn Leaf Insect (Eophyllium messelensis) Its leaflike abdomen closely matches foliage, proving that sophisticated mimicry existed at least 47 million years ago. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ctenoplectrella 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ctenoplectrella.webp Green-headed Ctenoplectrelline Bee (Ctenoplectrella viridiceps) Amber sealed an extinct mason-bee relative whose long hind-leg hairs show that it actively collected and transported pollen. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ernietta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ernietta.webp Ernietta (Ernietta plateauensis) Rows of quilted sacks lived half-buried in sand, forming one of the Ediacaran seafloor's strangest communities. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rangea 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/rangea.webp Rangea (Rangea schneiderhoehni) Six branching vanes surrounded a central axis, making the organism resemble a soft pine cone standing on the seabed. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tribrachidium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tribrachidium.webp Tribrachidium (Tribrachidium heraldicum) Three curving spiral arms created a body symmetry almost absent among living animals. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aysheaia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aysheaia.webp Aysheaia (Aysheaia pedunculata) Ten pairs of stubby legs beneath a soft body place it near the early history of velvet worms and arthropods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/leanchoilia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/leanchoilia.webp Leanchoilia (Leanchoilia superlata) A pair of great appendages ended in three long whips that could sense, seize and move food. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hurdia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hurdia.webp Hurdia (Hurdia victoria) A huge domed carapace covered its head, giving this radiodont the outline of a tiny finned submarine. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/endoceras 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/endoceras.webp Endoceras (Endoceras giganteum) A straight conical shell several meters long made it one of the most conspicuous large cephalopods of Ordovician seas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/arandaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/arandaspis.webp Arandaspis (Arandaspis prionotolepis) It lacked jaws and paired fins, but its head and gill region were enclosed within strong armor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cephalaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cephalaspis.webp Cephalaspis (Cephalaspis lyelli) Sensory fields beneath a broad crescent-shaped head shield helped it search through turbid bottom water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pterygotus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pterygotus.webp Pterygotus (Pterygotus anglicus) Flattened swimming paddles and great toothed claws made it a formidable hunter in Silurian water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/panderichthys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/panderichthys.webp Panderichthys (Panderichthys rhombolepis) A flat head with upward-facing eyes and limb-like bones inside its fins brought it close to the earliest tetrapods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/acanthostega 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/acanthostega.webp Acanthostega (Acanthostega gunnari) Each forelimb carried eight digits, yet the animal was still mainly aquatic—digits evolved before true land walking. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diplocaulus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/diplocaulus.webp Diplocaulus (Diplocaulus magnicornis) Its skull spread sideways into a boomerang, perhaps producing lift in current or making it hard to swallow. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eryops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eryops.webp Eryops (Eryops megacephalus) A broad, heavily sculpted skull and strong limbs carried its massive body through shallow water and onto banks. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/seymouria 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/seymouria.webp Seymouria (Seymouria baylorensis) Its adult skeleton looked reptile-like, yet it belonged just outside the fully land-breeding amniotes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/platyhystrix 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/platyhystrix.webp Platyhystrix (Platyhystrix rugosus) A high bony sail towered above the squat body and may have served display, recognition or heat exchange. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/prionosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/prionosuchus.webp Prionosuchus (Prionosuchus plummeri) A long, tooth-filled snout gave this giant amphibian a gharial-like aquatic profile. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diictodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/diictodon.webp Diictodon (Diictodon feliceps) A beak, short tusks and powerful forelimbs made this one of the most common burrowing herbivores of the Late Permian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gorgonops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gorgonops.webp Gorgonops (Gorgonops torvus) Long upper canines and a wide gape made it an early experiment in saber-toothed predation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eunotosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eunotosaurus.webp Eunotosaurus (Eunotosaurus africanus) Nine pairs of broad, flattened ribs record an early stage in the evolution of the turtle shell. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/staurikosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/staurikosaurus.webp Staurikosaurus (Staurikosaurus pricei) This lightly built two-meter hunter represents an early branch from the first dinosaur diversification. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/massospondylus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/massospondylus.webp Massospondylus (Massospondylus carinatus) A long neck, small head and grasping hands mark a stage between bipedal ancestors and giant quadrupedal sauropods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cryolophosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cryolophosaurus.webp Cryolophosaurus (Cryolophosaurus ellioti) A curved transverse crest across its skull gives this large Antarctic theropod an unmistakable profile. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/acrocanthosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/acrocanthosaurus.webp Acrocanthosaurus (Acrocanthosaurus atokensis) Tall neural spines along the neck and back supported a muscular ridge rather than a paper-thin sail. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/concavenator 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/concavenator.webp Concavenator (Concavenator corcovatus) Two very tall vertebrae ahead of the hips formed a short steep back crest, while the forearm carried unusual knobs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/majungasaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/majungasaurus.webp Majungasaurus (Majungasaurus crenatissimus) A short deep skull carried a rounded horn, while tooth marks on its own species provide rare scavenging evidence. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/styracosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/styracosaurus.webp Styracosaurus (Styracosaurus albertensis) A huge nasal horn and long spikes radiating from the frill made one of the most dramatic ceratopsian heads. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kosmoceratops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kosmoceratops.webp Kosmoceratops (Kosmoceratops richardsoni) Fifteen horn-like ornaments across the nose, brows and broad frill formed a folded crown around the skull. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kentrosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kentrosaurus.webp Kentrosaurus (Kentrosaurus aethiopicus) Plates covered the front body while long paired spikes armed the hips and tail, concentrating defense behind it. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mamenchisaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mamenchisaurus.webp Mamenchisaurus (Mamenchisaurus hochuanensis) Nineteen elongated neck vertebrae placed nearly half the body's length in the neck, lightened internally by air spaces. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sinosauropteryx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sinosauropteryx.webp Sinosauropteryx (Sinosauropteryx prima) Simple filamentous feathers and tail color bands made it the first dinosaur restored with evidence-based coloration. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/caudipteryx 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/caudipteryx.webp Caudipteryx (Caudipteryx zoui) Orderly vaned feathers covered its arms and short tail, but symmetric feathers and body proportions prevented powered flight. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/confuciusornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/confuciusornis.webp Confuciusornis (Confuciusornis sanctus) A toothless beak, clawed wings and—in some individuals—two long ribbon-like tail feathers appeared together. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hesperornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hesperornis.webp Hesperornis (Hesperornis regalis) Its wings shrank to small bones while rear-set legs turned it into a superb Mesozoic pursuit diver. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ichthyornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ichthyornis.webp Ichthyornis (Ichthyornis dispar) Its body and flight resembled a tern, but a row of true teeth remained inside the long jaws. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tapejara 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tapejara.webp Tapejara (Tapejara wellnhoferi) An enormous crest rose above a short toothless beak, with soft tissue extending the bony sail still farther. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/plesiosaurus 2026-09-01 yearly 0.7 https://extinctatlas.com/media/species/plesiosaurus.webp Plesiosaurus (Plesiosaurus dolichodeirus) Four long flippers flew through water while a long flexible neck carried the small head toward prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tylosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tylosaurus.webp Tylosaurus (Tylosaurus proriger) A solid snout projected beyond the teeth as this giant mosasaur hunted fish, turtles and other reptiles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archelon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/archelon.webp Archelon (Archelon ischyros) Front flippers spanned several meters, and a leathery covering stretched over a reduced bony shell. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ophthalmosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ophthalmosaurus.webp Ophthalmosaurus (Ophthalmosaurus icenicus) Huge bony eye rings supported vision under pressure and may have helped track soft prey in dim water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/moeritherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/moeritherium.webp Moeritherium (Moeritherium lyonsi) Tapir-sized and short-faced, it lived before proboscideans acquired the elephant's long trunk and giant body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/platybelodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/platybelodon.webp Platybelodon (Platybelodon grangeri) A widened jaw and flattened lower tusks formed a shovel-like cutting edge for tough vegetation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/deinotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/deinotherium.webp Deinotherium (Deinotherium giganteum) Only the lower jaw carried tusks, curving downward beneath a body taller than most modern elephants. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gomphotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gomphotherium.webp Gomphotherium (Gomphotherium angustidens) Two upper and two lower tusks gave its elongated head a four-tusked profile absent from living elephants. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hyaenodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hyaenodon.webp Hyaenodon (Hyaenodon horridus) A long skull held powerful jaw muscles, while slicing molars evolved independently from carnivoran carnassials. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/amphicyon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/amphicyon.webp Amphicyon (Amphicyon ingens) A bear-heavy torso combined with a dog-like long skull and tail, inspiring the name bear-dog. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megistotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/megistotherium.webp Megistotherium (Megistotherium osteothlastes) A skull nearly half a meter long and robust shearing teeth placed it among the largest terrestrial mammalian carnivores. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thalassocnus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/thalassocnus.webp Thalassocnus (Thalassocnus natans) Dense bones helped it submerge and long claws anchored it on the bottom—an extraordinary marine experiment among ground sloths. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/josephoartigasia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/josephoartigasia.webp Josephoartigasia (Josephoartigasia monesi) It may have approached a tonne, with giant incisors capable of generating exceptional bite forces. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pelagornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pelagornis.webp Sanders's Pelagornis (Pelagornis sandersi) Its estimated wingspan exceeded six meters, while bony pseudoteeth lined a beak adapted to slippery marine prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/olenoides 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/olenoides.webp Olenoides (Olenoides serratus) Its antennae, gills and clawed legs reveal far more than a mineralized trilobite shell. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sidneyia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sidneyia.webp Sidneyia (Sidneyia inexpectans) Robust leg bases formed crushing jaws for small trilobites and other shelled prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/naraoia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/naraoia.webp Naraoia (Naraoia compacta) Two large shields covered a soft body equipped with fully segmented trilobite-like limbs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/waptia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/waptia.webp Waptia (Waptia fieldensis) A bivalved carapace, paddle-like tail and brooded eggs reveal an early crustacean relative in detail. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/isotelus-rex 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/isotelus-rex.webp Giant Isotelus (Isotelus rex) At nearly seventy centimeters, it is among the largest complete trilobites ever found. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/acutiramus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/acutiramus.webp Acutiramus (Acutiramus cummingsi) Its long pincers carried slanting blades suited to holding or slicing soft prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/climatius 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/climatius.webp Climatius (Climatius reticulatus) Rows of paired ventral spines formed a defensive fence beneath this small early jawed fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/drepanaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/drepanaspis.webp Drepanaspis (Drepanaspis gemuendenensis) Its body was a flattened shield with upward-facing eyes and a mouth beneath the front edge. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/orthacanthus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/orthacanthus.webp Orthacanthus (Orthacanthus senckenbergianus) An eel-like body, continuous fin and spine behind the head made it unlike any modern shark. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/xenacanthus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/xenacanthus.webp Xenacanthus (Xenacanthus decheni) A single head spine, forked teeth and continuous dorsal fin defined this freshwater shark. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ophiacodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ophiacodon.webp Ophiacodon (Ophiacodon mirus) Its long skull and deep tail suggest a waterside animal that was still a capable walker. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sphenacodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sphenacodon.webp Sphenacodon (Sphenacodon ferox) Low vertebral ridges accompanied a deep skull and strongly differentiated teeth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/biarmosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/biarmosuchus.webp Biarmosuchus (Biarmosuchus tener) A light build, long limbs and small skull bosses combine primitive and therapsid features. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/anteosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/anteosaurus.webp Anteosaurus (Anteosaurus magnificus) A huge skull combined thickened impact surfaces with long canines in a formidable predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tapinocephalus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tapinocephalus.webp Tapinocephalus (Tapinocephalus atherstonei) A domed, massively thick skull crowned the barrel body of this giant herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thrinaxodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/thrinaxodon.webp Thrinaxodon (Thrinaxodon liorhinus) A whiskered snout, differentiated teeth and burrowing life approach the mammalian body plan. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cynognathus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cynognathus.webp Cynognathus (Cynognathus crateronotus) A dog-like snout, slicing cheek teeth and upright hind limbs made it a major cynodont predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/postosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/postosuchus.webp Postosuchus (Postosuchus kirkpatricki) A deep skull, serrated teeth and powerful hind limbs placed it atop food webs before dinosaur dominance. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/desmatosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/desmatosuchus.webp Desmatosuchus (Desmatosuchus spurensis) Two huge backward-curving shoulder spikes reinforced rows of protective armor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/shringasaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/shringasaurus.webp Shringasaurus (Shringasaurus indicus) Paired forward-curving brow horns occur only in some individuals, suggesting maturity or sexual display. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ceratosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ceratosaurus.webp Ceratosaurus (Ceratosaurus nasicornis) A nasal horn, brow ridges and small midline osteoderms made this predator unmistakable. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/torvosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/torvosaurus.webp Torvosaurus (Torvosaurus tanneri) A huge skull and unusually powerful three-fingered arms marked one of the largest megalosaurids. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megalosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/megalosaurus.webp Megalosaurus (Megalosaurus bucklandii) The first formally named non-avian dinosaur later became a wastebasket for unrelated theropod bones. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ouranosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ouranosaurus.webp Ouranosaurus (Ouranosaurus nigeriensis) Tall neural spines supported a sail, ridge or fatty hump whose soft-tissue shape remains uncertain. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saurolophus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/saurolophus.webp Saurolophus (Saurolophus osborni) A solid spike-like crest projected behind the skull and probably carried a strong visual signal. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/corythosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/corythosaurus.webp Corythosaurus (Corythosaurus casuarius) A helmet-shaped hollow crest contained looping nasal passages that could shape resonant calls. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lambeosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lambeosaurus.webp Lambeosaurus (Lambeosaurus lambei) Its hatchet-shaped hollow crest changed dramatically as the animal matured. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pachyrhinosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pachyrhinosaurus.webp Pachyrhinosaurus (Pachyrhinosaurus canadensis) A massive nasal boss replaced the long horn seen in many ceratopsians. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sauropelta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sauropelta.webp Sauropelta (Sauropelta edwardsorum) Long shoulder spikes and dense armor protected one of the largest nodosaurids. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saltasaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/saltasaurus.webp Saltasaurus (Saltasaurus loricatus) Small bony plates embedded in the skin showed that some titanosaurs carried armor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dimorphodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dimorphodon.webp Dimorphodon (Dimorphodon macronyx) Two distinct tooth shapes gave this early pterosaur its name. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/anhanguera 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/anhanguera.webp Anhanguera (Anhanguera blittersdorffi) A toothed beak with matching crests helped seize slippery fish near the water surface. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nyctosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/nyctosaurus.webp Nyctosaurus (Nyctosaurus gracilis) An enormous branching crest crowned some adults, but there is no fossil evidence for a sail between its prongs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thalassodromeus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/thalassodromeus.webp Thalassodromeus (Thalassodromeus sethi) A vast sail-like skull crest dominated the profile of this large toothless pterosaur. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pterodaustro 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pterodaustro.webp Pterodaustro (Pterodaustro guinazui) More than a thousand bristle-like lower teeth formed a filter basket. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/metriorhynchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/metriorhynchus.webp Metriorhynchus (Metriorhynchus superciliosus) Flippers, a downturned tail fin and reduced armor transformed a crocodile relative into a pelagic swimmer. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pliosaurus-funkei 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pliosaurus-funkei.webp Funke's Pliosaur (Pliosaurus funkei) A skull nearly two meters long and huge teeth formed an apex-predator bite apparatus. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/styxosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/styxosaurus.webp Styxosaurus (Styxosaurus snowii) More than sixty neck vertebrae formed an exceptionally long neck, while gastroliths filled the abdomen. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cymbospondylus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cymbospondylus.webp Cymbospondylus (Cymbospondylus youngorum) Only a few million years after the great extinction, ichthyosaurs had already reached whale-like scale. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/protostega 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/protostega.webp Protostega (Protostega gigas) A reduced shell and giant front flippers made it one of the largest Cretaceous sea turtles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/leptictidium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/leptictidium.webp Leptictidium (Leptictidium auderiense) Long hind legs and a balancing tail powered a distinctive hopping gait through the forest floor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gastornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gastornis.webp Gastornis (Gastornis parisiensis) This giant flightless bird had a massive beak, but evidence favors a mainly herbivorous diet. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mesonyx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mesonyx.webp Mesonyx (Mesonyx obtusidens) Hoof-like toes and a large predatory skull belonged to a carnivorous mammal with no modern equivalent. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pakicetus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pakicetus.webp Pakicetus (Pakicetus attocki) Its body still walked on land, while a distinctive ear region identified it as an early whale. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dorudon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dorudon.webp Dorudon (Dorudon atrox) A streamlined whale body still carried tiny external hind limbs with no walking function. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/embolotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/embolotherium.webp Embolotherium (Embolotherium andrewsi) A broad hollow nasal ram rose from the skull of this immense brontothere. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/synthetoceras 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/synthetoceras.webp Synthetoceras (Synthetoceras tricornatus) A forked Y-shaped nasal horn joined two brow horns in the most elaborate protoceratid display. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/teleoceras 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/teleoceras.webp Teleoceras (Teleoceras major) Short legs and a barrel body gave this grazing rhinoceros a hippo-like outline. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mylodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mylodon.webp Mylodon (Mylodon darwinii) Thick hide reinforced by tiny bony nodules protected this large ground sloth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megalonyx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/megalonyx.webp Jefferson's Ground Sloth (Megalonyx jeffersonii) Huge curved claws belonged to a forest browser whose name is tied to Thomas Jefferson. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/fractofusus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/fractofusus.webp Fractofusus (Fractofusus misrai) Its quilted branches lay flat rather than rising from a stem. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/funisia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/funisia.webp Funisia (Funisia dorothea) Dense stands of narrow tubes formed one of the earliest large colonial scenes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/horodyskia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/horodyskia.webp Horodyskia (Horodyskia moniliformis) Bead-like discs arranged in strings may record an early macroscopic colony. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/grypania 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/grypania.webp Grypania (Grypania spiralis) Centimeter-wide ribbons curled into regular spirals among the earliest macroscopic fossils. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bangiomorpha 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bangiomorpha.webp Bangiomorpha (Bangiomorpha pubescens) Cell division and branching resemble living red algae and may record early sexual reproduction. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tortotubus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tortotubus.webp Tortotubus (Tortotubus protuberans) Branching microscopic hyphae show fungi helping to build the earliest soils. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ourasphaira 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ourasphaira.webp Ourasphaira (Ourasphaira giraldae) Branching spherical microfossils may push the fungal record toward one billion years. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pentremites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pentremites.webp Pentremites (Pentremites godoni) A flower-bud body carried five feeding and respiratory grooves. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/heliophyllum 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/heliophyllum.webp Heliophyllum (Heliophyllum halli) Radiating septa inside a horn-shaped skeleton resemble a stone sun. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/halysites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/halysites.webp Chain coral (Halysites catenularius) Linked tubes formed honeycomb chains across Paleozoic reefs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/atrypa 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/atrypa.webp Atrypa (Atrypa reticularis) Fine radial ribs covered rounded shells that once crowded ancient seabeds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/paraspirifer 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/paraspirifer.webp Paraspirifer (Paraspirifer bownockeri) A broad hinge line formed stone wings that stabilized the shell on soft mud. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/baculites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/baculites.webp Baculites (Baculites compressus) Its adult shell stretched into a near-straight rod while retaining ammonite sutures. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tusoteuthis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tusoteuthis.webp Tusoteuthis (Tusoteuthis longa) A huge internal shell identifies a large coleoidean, though total length remains uncertain. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/scaphites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/scaphites.webp Scaphites (Scaphites nodosus) The juvenile shell coiled tightly before the adult chamber uncoiled and hooked back. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/onchopristis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/onchopristis.webp Onchopristis (Onchopristis numidus) Barbed teeth armed a long rostrum used to sense and sweep through bottom prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/xiphactinus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/xiphactinus.webp Xiphactinus (Xiphactinus audax) Its huge upturned mouth could swallow fish nearly half its own length. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/enchodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/enchodus.webp Enchodus (Enchodus petrosus) Oversized palatine fangs made a modest fish into a formidable midwater hunter. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diplomystus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/diplomystus.webp Diplomystus (Diplomystus dentatus) Schools of herring-like fish were sealed into fine lake sediments. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/materpiscis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/materpiscis.webp Materpiscis (Materpiscis attenboroughi) An embryo with an umbilical connection records some of the earliest live birth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/titanichthys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/titanichthys.webp Titanichthys (Titanichthys agassizi) This giant placoderm lacked sharp jaw blades and may have filtered plankton. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ptychodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ptychodus.webp Ptychodus (Ptychodus mortoni) Broad crushing teeth paved its mouth for ammonites and shellfish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gerrothorax 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gerrothorax.webp Gerrothorax (Gerrothorax pulcherrimus) A shovel-flat skull may have opened by lifting the upper jaw. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/metoposaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/metoposaurus.webp Metoposaurus (Metoposaurus diagnosticus) A broad flat head occupied nearly the full width of its front body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/crassigyrinus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/crassigyrinus.webp Crassigyrinus (Crassigyrinus scoticus) Tiny limbs and strong jaws show an early tetrapod returning almost completely to water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/henodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/henodus.webp Henodus (Henodus chelyops) A turtle-like shell protected a placodont with a broad filtering or scraping mouth. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/placodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/placodus.webp Placodus (Placodus gigas) Chisel incisors and crushing palatal teeth formed a shell-opening toolkit. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/atopodentatus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/atopodentatus.webp Atopodentatus (Atopodentatus unicus) A hammer-shaped snout scraped algae before needle teeth filtered the fragments. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/halszkaraptor 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/halszkaraptor.webp Halszkaraptor (Halszkaraptor escuilliei) A long neck, dense teeth and paddle-like arms suggest a semiaquatic raptor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/masiakasaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/masiakasaurus.webp Masiakasaurus (Masiakasaurus knopfleri) Forward-projecting front teeth may have hooked small slippery prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/jakapil 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/jakapil.webp Jakapil (Jakapil kaniukura) A small plant eater combined low armor with an unusually deep jaw. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/epidexipteryx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/epidexipteryx.webp Epidexipteryx (Epidexipteryx hui) Four long tail feathers displayed rather than powering flight. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/darwinopterus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/darwinopterus.webp Darwinopterus (Darwinopterus modularis) A long tail and advanced skull combine features once separated between pterosaur groups. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tupandactylus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tupandactylus.webp Tupandactylus (Tupandactylus imperator) Most of its enormous head crest was soft tissue used as a visual signal. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/teratornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/teratornis.webp Teratornis (Teratornis merriami) Its near-condor wings paired with feet and a bill suited to taking live prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/vegavis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/vegavis.webp Vegavis (Vegavis iaai) A waterbird close to ducks lived before the non-avian dinosaurs vanished. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lithornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lithornis.webp Lithornis (Lithornis vulturinus) A strong flyer belonged near lineages whose living members are mostly flightless. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sylviornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sylviornis.webp Sylviornis (Sylviornis neocaledoniae) This tall flightless island bird was closer to megapodes than its heavy build suggested. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aptornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aptornis.webp Aptornis (Aptornis otidiformis) Powerful legs and a heavy bill belonged to a flightless ground forager. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/xenicibis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/xenicibis.webp Xenicibis (Xenicibis xympithecus) A flightless ibis turned thickened wrist bones into club-like weapons. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ekaltadeta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ekaltadeta.webp Ekaltadeta (Ekaltadeta ima) Deep jaws and slicing teeth suggest an ancient kangaroo relative that ate meat. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kolponomos 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kolponomos.webp Kolponomos (Kolponomos newportensis) A bear-like carnivore used powerful jaws to pry and crush shellfish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/miracinonyx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/miracinonyx.webp American cheetah (Miracinonyx trumani) Long limbs converged on cheetah proportions, but its closest ties were to cougars. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nimbadon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/nimbadon.webp Nimbadon (Nimbadon lavarackorum) Grasping feet and flexible shoulders reveal a large climbing marsupial. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeoloxodon-cypriotes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeoloxodon-cypriotes.webp Cyprus dwarf elephant (Palaeoloxodon cypriotes) Island scarcity shrank a giant-elephant lineage to about one meter at the shoulder. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sea-mink 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sea-mink.webp Sea mink (Neogale macrodon) It was hunted out for fur before scientists could describe a living animal. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bluebuck 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bluebuck.webp Bluebuck (Hippotragus leucophaeus) Its blue cast likely came from gray hair over dark skin rather than bright fur. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/schomburgks-deer 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/schomburgks-deer.webp Schomburgk's deer (Rucervus schomburgki) Broad multi-tined antlers formed a crown above floodplain grasslands. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sagenopteris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sagenopteris.webp Sagenopteris (Sagenopteris rhoifolia) Four net-veined leaflets belonged to a seed fern rather than a true fern. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/araucarioxylon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/araucarioxylon.webp Araucarioxylon (Araucarioxylon arizonicum) Silica replaced fallen trunks to create today's multicolored petrified forest. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/beelzebufo 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/beelzebufo.webp Beelzebufo (Beelzebufo ampinga) A broad skull and massive body made it one of the largest known frogs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/koolasuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/koolasuchus.webp Koolasuchus (Koolasuchus cleelandi) A giant amphibian still occupied cold rivers where crocodyliforms were uncommon. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mastodonsaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mastodonsaurus.webp Mastodonsaurus (Mastodonsaurus giganteus) Two lower-jaw tusks passed through openings in the palate when the mouth closed. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/triadobatrachus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/triadobatrachus.webp Triadobatrachus (Triadobatrachus massinoti) It had a broad head and shortened trunk but lacked the full jumping machinery of modern frogs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gerobatrachus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gerobatrachus.webp Gerobatrachus (Gerobatrachus hottoni) A frog-like head and salamander-like tail combine traits near the origin of living amphibians. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/vieraella 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/vieraella.webp Vieraella (Vieraella herbstii) The adult tail was gone, but the trunk remained more primitive than in modern frogs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/karaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/karaurus.webp Karaurus (Karaurus sharovi) A broad head, short trunk and long tail show the salamander plan already well established. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/albanerpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/albanerpeton.webp Albanerpeton (Albanerpeton inexpectatum) Its wedge-shaped skull belonged to an ancient amphibian lineage separate from frogs and salamanders. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/fedexia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/fedexia.webp Fedexia (Fedexia striegeli) An elongated nostril region may reflect life in drier upland settings. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/microbrachis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/microbrachis.webp Microbrachis (Microbrachis pelikani) More than forty trunk vertebrae formed a long body with extremely small limbs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/branchiosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/branchiosaurus.webp Branchiosaurus (Branchiosaurus salamandroides) Adults retained external gills, extending a juvenile condition through life. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pederpes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pederpes.webp Pederpes (Pederpes finneyae) Forward-facing toes show an early tetrapod using a more effective terrestrial gait. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/whatcheeria 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/whatcheeria.webp Whatcheeria (Whatcheeria deltae) A reinforced skull and fang-like teeth belonged to a powerful river predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/greererpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/greererpeton.webp Greererpeton (Greererpeton burkemorani) A long trunk and deep tail propelled it through murky water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/balanerpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/balanerpeton.webp Balanerpeton (Balanerpeton woodi) The ear region and sturdy limbs suggest more terrestrial activity than in many contemporaries. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dendrerpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dendrerpeton.webp Dendrerpeton (Dendrerpeton acadianum) Many individuals were entombed inside hollow tree stumps. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cacops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cacops.webp Cacops (Cacops aspidephorus) A row of bony back plates reinforced this stocky terrestrial amphibian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/zatrachys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/zatrachys.webp Zatrachys (Zatrachys serratus) A serrated rear skull margin may have protected the neck or supported soft tissue. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/plagiosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/plagiosuchus.webp Plagiosuchus (Plagiosuchus pustuliferus) Its semicircular skull was extraordinarily broad and flat. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/siderops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/siderops.webp Siderops (Siderops kehli) A giant temnospondyl still occupied river ambush niches in the dinosaur era. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rhinesuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/rhinesuchus.webp Rhinesuchus (Rhinesuchus whaitsi) This broad-headed aquatic predator was common in southern Late Permian waters. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/trematolestes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/trematolestes.webp Trematolestes (Trematolestes hagdorni) A narrow snout was built to snap at fish in water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/adelospondylus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/adelospondylus.webp Adelospondylus (Adelospondylus watsoni) The limbs vanished entirely while the skull and spine retained tetrapod construction. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eocaecilia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eocaecilia.webp Eocaecilia (Eocaecilia micropodia) It had a caecilian-like body but still retained four tiny legs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eryosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eryosuchus.webp Eryosuchus (Eryosuchus garjainovi) A skull more than two meters long belonged to one of the largest freshwater amphibian predators. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archegosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/archegosaurus.webp Archegosaurus (Archegosaurus decheni) A long snout, lateral-line grooves and weak limbs show permanent aquatic dependence. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/paracyclotosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/paracyclotosaurus.webp Paracyclotosaurus (Paracyclotosaurus davidi) A near-complete skeleton reveals the full proportions of a giant Triassic amphibian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/andrias-scheuchzeri 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/andrias-scheuchzeri.webp Andrias scheuchzeri (Andrias scheuchzeri) Its skeleton was once mistaken for a human killed in the biblical flood. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eomortoniellus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eomortoniellus.webp Eomortoniellus (Eomortoniellus handlirschi) Tiny ear canals in the forelegs show that it heard ultrasonic calls. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/haidomyrmex 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/haidomyrmex.webp Haidomyrmex (Haidomyrmex cerberus) Its sickle mandibles closed upward against the head instead of sideways. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/linguamyrmex 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/linguamyrmex.webp Linguamyrmex (Linguamyrmex vladi) A metal-reinforced head horn and rising jaws formed a specialized clamp. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ceratomyrmex 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ceratomyrmex.webp Ceratomyrmex (Ceratomyrmex ellenbergeri) A long forehead horn opposed upward-curving mandibles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/camelomecia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/camelomecia.webp Camelomecia (Camelomecia janovitzi) An elongated prothorax gave this aculeate relative a neck-like outline. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aptenoperissus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aptenoperissus.webp Aptenoperissus (Aptenoperissus burmanicus) Wingless females combined a wasp waist with enlarged jumping hind legs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/manipulator 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/manipulator.webp Manipulator (Manipulator modificaputis) A long neck and grasping forelegs converged on the mantis body plan. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/alienopterus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/alienopterus.webp Alienopterus (Alienopterus brachyelytrus) Short leathery forewings covered folded membranous hindwings. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/chresmoda 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/chresmoda.webp Chresmoda (Chresmoda obscura) Six extremely long legs may have spread its weight across the water surface. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mesopsyche 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mesopsyche.webp Mesopsyche (Mesopsyche dobrokhotovae) A long siphon accessed sugary secretions before flowers evolved. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tarwinia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tarwinia.webp Tarwinia (Tarwinia australis) It resembled a giant primitive flea but may not be a direct flea ancestor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/erasipteron 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/erasipteron.webp Erasipteron (Erasipteron larischi) Broad net-veined wings carried an early aerial predator through oxygen-rich forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bojophlebia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bojophlebia.webp Bojophlebia (Bojophlebia prokopi) Huge triangular wings and long tail filaments belonged to a giant mayfly relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/homoioptera 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/homoioptera.webp Homoioptera (Homoioptera woodwardi) Thoracic winglets accompanied four large wings in an extinct flight architecture. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archimylacris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/archimylacris.webp Archimylacris (Archimylacris eggintoni) A shield-like pronotum and flat wings mark an early cockroach-mantis relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gerarus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gerarus.webp Gerarus (Gerarus danae) An enlarged prothorax carried a row of prominent spines. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/qilianiblatta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/qilianiblatta.webp Qilianiblatta (Qilianiblatta namurensis) Its wing venation pushes the cockroach-like pattern deep into the Carboniferous. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mickoleitia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mickoleitia.webp Mickoleitia (Mickoleitia longimanus) Raptorial forelegs and three tail filaments formed a lost mayfly body plan. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mesotitan 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mesotitan.webp Mesotitan (Mesotitan giganteus) Large wings and robust mouthparts belonged to the spectacular titanopterans. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/discoscapa 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/discoscapa.webp Discoscapa (Discoscapa apicula) Pollen on the legs and body records an early pollination relationship. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/prototaxites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/prototaxites.webp Prototaxites (Prototaxites dawsonii) Meter-high columns towered over landscapes of otherwise low vegetation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/paleopyrenomycites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/paleopyrenomycites.webp Paleopyrenomycites (Paleopyrenomycites devonicus) Tiny flask-shaped fruiting bodies inside plant tissue are among the oldest ascomycete evidence. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeoagaracites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeoagaracites.webp Palaeoagaracites (Palaeoagaracites antiquus) A millimeter-scale cap and gills show agaric mushrooms in the dinosaur era. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaeomarasmius 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/archaeomarasmius.webp Archaeomarasmius (Archaeomarasmius leggettii) A slender stem and tiny cap already resembled marasmioid mushrooms. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gondwanagaricites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gondwanagaricites.webp Gondwanagaricites (Gondwanagaricites magnificus) A mineralized cap brings early agaric evidence to the southern continents. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/coprinites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/coprinites.webp Coprinites (Coprinites dominicana) Its pleated bell cap may have deliquesced like a modern inkcap. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aureofungus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aureofungus.webp Aureofungus (Aureofungus yaniguaensis) A golden-brown cap retained three-dimensional gills in amber. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/protomycena 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/protomycena.webp Protomycena (Protomycena electra) Radial striations remained visible across a minute translucent cap. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gerontomyces 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gerontomyces.webp Gerontomyces (Gerontomyces lepidotus) Hyphae surrounding a scale insect preserve a tiny Cretaceous association. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeoclavaria 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeoclavaria.webp Palaeoclavaria (Palaeoclavaria burmitis) Simple club-shaped fruiting bodies show non-gilled fungi in Cretaceous forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/proterocladus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/proterocladus.webp Proterocladus (Proterocladus antiquus) Repeatedly branching cell filaments push green-plant history toward one billion years. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rafatazmia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/rafatazmia.webp Rafatazmia (Rafatazmia chitrakootensis) Cell partitions and internal platelets were interpreted as very ancient red-algal evidence. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/ramathallus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/ramathallus.webp Ramathallus (Ramathallus lobatus) A lobed multicellular thallus was proposed as an early red-algal body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/vendotaenia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/vendotaenia.webp Vendotaenia (Vendotaenia antiqua) Long carbonaceous ribbons resemble soft algae but lack diagnostic organs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/margaretia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/margaretia.webp Margaretia (Margaretia dorus) A perforated tube once treated as an animal is now linked to a branching alga. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/yuknessia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/yuknessia.webp Yuknessia (Yuknessia simplex) Simple narrow blades radiated from a common attachment. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/receptaculites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/receptaculites.webp Receptaculites (Receptaculites oweni) Spiraled diamond plates formed a calcified pinecone-like body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cyclocrinites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cyclocrinites.webp Cyclocrinites (Cyclocrinites dactioloides) Whorled calcified branches surrounded a central axis like an underwater bottlebrush. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/solenopora 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/solenopora.webp Solenopora (Solenopora jurassica) Pink calcified masses were long assigned to red algae, but their identity is being reassessed. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/doushantuophyton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/doushantuophyton.webp Doushantuophyton (Doushantuophyton cometa) Branching cellular filaments show complex photosynthetic life before abundant animals. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/wattieza 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/wattieza.webp Wattieza (Wattieza casasii) Eight-meter leafless crowns formed one of the earliest known forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pleuromeia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pleuromeia.webp Pleuromeia (Pleuromeia sternbergii) Columnar lycophytes formed pioneer stands after the end-Permian catastrophe. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dicroidium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dicroidium.webp Dicroidium (Dicroidium odontopteroides) Paired forked fronds became an emblem of Triassic southern vegetation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gangamopteris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gangamopteris.webp Gangamopteris (Gangamopteris obovata) Broad tongue-shaped leaves lacked the strong midrib of later glossopterids. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/alethopteris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/alethopteris.webp Alethopteris (Alethopteris serlii) Firm fern-like pinnules belonged to a seed plant rather than a true fern. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/podozamites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/podozamites.webp Podozamites (Podozamites lanceolatus) Orderly lance-shaped leaves lined stems of a widespread but enigmatic plant. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megatypus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/megatypus.webp Megatypus (Megatypus schucherti) A wingspan near half a meter made it a major aerial predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lithomantis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lithomantis.webp Lithomantis (Lithomantis carbonarius) Leaf-like thoracic lobes accompanied four functional wings. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/strashila 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/strashila.webp Strashila (Strashila incredibilis) Once imagined as a parasite, it was later shown to have an aquatic juvenile stage. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cretophengodes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cretophengodes.webp Cretophengodes (Cretophengodes azari) An abdominal light organ pushes beetle bioluminescence into the dinosaur age. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aegirocassis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aegirocassis.webp Aegirocassis (Aegirocassis benmoulai) A two-meter filter-feeding radiodont was an early analogue of giant plankton feeders. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cambroraster 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cambroraster.webp Cambroraster (Cambroraster falcatus) A horseshoe-shaped carapace and rake-like appendages made a mobile sediment sifter. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/titanokorys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/titanokorys.webp Titanokorys (Titanokorys gainesi) An enormous head shield covered most of this bottom-feeding radiodont. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/isoxys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/isoxys.webp Isoxys (Isoxys curvirostratus) A spined bivalved shell enclosed a large-eyed swimming predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/olenellus-thompsoni 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/olenellus-thompsoni.webp Olenellus thompsoni (Olenellus thompsoni) A broad head, long genal spines and many trunk segments marked an early trilobite radiation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/parapuzosia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/parapuzosia.webp Parapuzosia (Parapuzosia seppenradensis) A coiled shell nearly two meters wide belonged to the largest known ammonite. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/belemnotheutis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/belemnotheutis.webp Belemnotheutis (Belemnotheutis antiquus) Rare soft tissues restore the ink sac, fins and ten hooked arms around an internal shell. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hibbertopterus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hibbertopterus.webp Hibbertopterus (Hibbertopterus scouleri) A two-meter eurypterid swept the bottom rather than sprinting after prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/entelognathus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/entelognathus.webp Entelognathus (Entelognathus primordialis) Placoderm armor enclosed jaw-margin bones resembling those of later bony fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rhizodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/rhizodus.webp Rhizodus (Rhizodus hibberti) Huge conical teeth armed a multi-meter freshwater lobe-finned predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/saurichthys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/saurichthys.webp Saurichthys (Saurichthys curionii) A needle-like snout and slender body converged on modern barracudas. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hybodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hybodus.webp Hybodus (Hybodus reticulatus) Dorsal fin spines and two tooth shapes handled fish and hard-shelled prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/stethacanthus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/stethacanthus.webp Stethacanthus (Stethacanthus altonensis) Males carried a denticle-covered anvil-shaped structure on the back. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bonnerichthys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bonnerichthys.webp Bonnerichthys (Bonnerichthys gladius) A giant bony fish filtered plankton near the ocean surface. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diploceraspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/diploceraspis.webp Diploceraspis (Diploceraspis burkei) Paired backward horns widened the skull of this small diplocaulid. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cyclotosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cyclotosaurus.webp Cyclotosaurus (Cyclotosaurus robustus) Closed otic notches and a broad flat skull marked a giant aquatic ambush predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/koskinonodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/koskinonodon.webp Koskinonodon (Koskinonodon perfectum) A broad half-meter skull carried grooves that sensed water movement. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/amphibamus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/amphibamus.webp Amphibamus (Amphibamus grandiceps) A small light body combined traits near the ancestry of modern amphibians. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/simosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/simosuchus.webp Simosuchus (Simosuchus clarki) A short square snout, leaf-shaped teeth and armor belonged to a likely plant-eating crocodyliform. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/longisquama 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/longisquama.webp Longisquama (Longisquama insignis) A row of exaggerated dorsal appendages has been called scales, feathers or gliding surfaces. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sharovipteryx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sharovipteryx.webp Sharovipteryx (Sharovipteryx mirabilis) Its main flight membrane stretched between extraordinarily long hind legs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/proganochelys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/proganochelys.webp Proganochelys (Proganochelys quenstedtii) A complete shell coexisted with neck spikes and an inability to retract the head. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/carbonemys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/carbonemys.webp Carbonemys (Carbonemys cofrinii) A shell nearly two meters long came from hot wetlands soon after the dinosaur extinction. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/purussaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/purussaurus.webp Purussaurus (Purussaurus brasiliensis) A skull over a meter long belonged to a dominant Miocene caiman. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thanatotheristes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/thanatotheristes.webp Thanatotheristes (Thanatotheristes degrootorum) A deep snout with facial ridges marked an early northern tyrannosaurid. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dreadnoughtus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dreadnoughtus.webp Dreadnoughtus (Dreadnoughtus schrani) A relatively complete skeleton makes this giant titanosaur unusually measurable. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bajadasaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bajadasaurus.webp Bajadasaurus (Bajadasaurus pronuspinax) Paired neck spines curved forward and may have carried keratin or soft tissue. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kulindadromeus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kulindadromeus.webp Kulindadromeus (Kulindadromeus zabaikalicus) Scales, simple filaments and branching feather-like structures covered one small herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/heterodontosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/heterodontosaurus.webp Heterodontosaurus (Heterodontosaurus tucki) Incisor, tusk-like and cheek teeth formed an unusual dinosaur dentition. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nanuqsaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/nanuqsaurus.webp Nanuqsaurus (Nanuqsaurus hoglundi) It hunted through polar night, though its supposedly dwarf size remains uncertain. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dromornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dromornis.webp Dromornis (Dromornis stirtoni) Three meters tall with a massive beak, it was among the heaviest birds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kelenken 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kelenken.webp Kelenken (Kelenken guillermoi) A seventy-centimeter skull and hooked beak armed one of the largest terror birds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/icadyptes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/icadyptes.webp Icadyptes (Icadyptes salasi) A one-and-a-half-meter penguin lived near the equator with a spear-like beak. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/anthropornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/anthropornis.webp Anthropornis (Anthropornis nordenskjoeldi) At almost 1.8 meters, it was a giant diver on a warmer Antarctic coast. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/emeus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/emeus.webp Emeus (Emeus crassus) Strong legs carried a medium moa whose feathers resembled shaggy hair. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/rodrigues-solitaire 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/rodrigues-solitaire.webp Rodrigues solitaire (Pezophaps solitaria) This giant flightless pigeon fought with bony wing knobs and was the dodo's closest relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/megalocnus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/megalocnus.webp Megalocnus (Megalocnus rodens) A bear-sized Caribbean ground sloth survived near the period of human arrival. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palorchestes 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palorchestes.webp Palorchestes (Palorchestes azael) A mobile snout, huge claws and strange forelimbs belonged to a marsupial unlike any tapir. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/zygomaturus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/zygomaturus.webp Zygomaturus (Zygomaturus trilobus) A cow-sized wombat relative carried a broad snout and heavy limbs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eobasileus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eobasileus.webp Eobasileus (Eobasileus cornutus) Three pairs of skull bosses and long canines crowned a rhino-sized herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/merycoidodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/merycoidodon.webp Merycoidodon (Merycoidodon culbertsonii) A short face, tusk-like canines and grinding cheeks marked a herd-forming artiodactyl relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dinocrocuta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dinocrocuta.webp Dinocrocuta (Dinocrocuta gigantea) Massive jaws and rounded carnassials crushed bone, though it was not a modern hyena. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/simbakubwa 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/simbakubwa.webp Simbakubwa (Simbakubwa kutokaafrika) Huge cutting teeth came from a hyaenodont predator heavier than a modern lion. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/notiomastodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/notiomastodon.webp Notiomastodon (Notiomastodon platensis) A flexible proboscidean crossed many habitats and ate mixed vegetation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tappania 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tappania.webp Tappania (Tappania plana) Complex branching and septa make it a candidate early eukaryote or fungus. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/diskagma 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/diskagma.webp Diskagma (Diskagma buttonii) Cup-like bodies linked by filaments have been read as fungi or a microbial colony. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/protoascon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/protoascon.webp Protoascon (Protoascon missouriensis) Tiny sac-like structures in coal balls resemble an early ascomycete. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/winfrenatia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/winfrenatia.webp Winfrenatia (Winfrenatia reticulata) Fungal filaments surrounded cyanobacterium-like cells in an early lichen-style partnership. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/chuaria 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/chuaria.webp Chuaria (Chuaria circularis) Circular carbon films may represent a giant single-celled eukaryote traditionally called an alga. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tawuia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tawuia.webp Tawuia (Tawuia dalensis) Sausage-shaped carbon films may be macroalgae or another early eukaryote. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/noeggerathia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/noeggerathia.webp Noeggerathia (Noeggerathia foliosa) A palm-like crown belonged not to a fern but to an extinct heterosporous seed-plant relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/archaeocalamites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/archaeocalamites.webp Archaeocalamites (Archaeocalamites radiatus) Hollow jointed stems let an early horsetail relative grow as a tall shrub or small tree. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/peltaspermum 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/peltaspermum.webp Peltaspermum (Peltaspermum martinsii) Shield-shaped reproductive discs record an innovation among drought-tolerant seed ferns. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/meganeurula 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/meganeurula.webp Meganeurula (Meganeurula selysii) Smaller than Meganeura but still broad-winged, this griffinfly hunted above coal forests. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/boltonocosta 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/boltonocosta.webp Boltonocosta (Boltonocosta elongata) A long piercing mouthpart and four patterned wings belonged to the vanished palaeodictyopterans. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/canadaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/canadaspis.webp Canadaspis (Canadaspis perfecta) Two broad valves enclosed a segmented body while antennae, limbs and a tail fan projected outside. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/fuxianhuia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/fuxianhuia.webp Fuxianhuia (Fuxianhuia protensa) Its nervous, circulatory and limb anatomy makes it central to studies of early arthropod organization. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nectocaris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/nectocaris.webp Nectocaris (Nectocaris pteryx) Paired fins, a funnel and tentacle-like appendages form one of the Cambrian's most puzzling swimmers. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eldonia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eldonia.webp Eldonia (Eldonia ludwigi) A coiled gut lay inside a soft circular disc that may have drifted or lived near the bottom. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/gemuendina 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/gemuendina.webp Gemuendina (Gemuendina stuertzi) A broad flat placoderm independently converged on the body shape of a ray. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lunaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lunaspis.webp Lunaspis (Lunaspis broilii) Crescent-shaped lateral horns widened the head armor of a small bottom-dwelling placoderm. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/trimerorhachis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/trimerorhachis.webp Trimerorhachis (Trimerorhachis insignis) External gills and a long body show a temnospondyl that remained aquatic throughout life. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sclerocephalus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sclerocephalus.webp Sclerocephalus (Sclerocephalus haeuseri) A broad head, strong trunk and compressed tail belonged to a large freshwater predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/champsosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/champsosaurus.webp Champsosaurus (Champsosaurus gigas) Long jaws and a powerful tail let choristoderes retain a crocodile-like niche after the dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mesosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mesosaurus.webp Mesosaurus (Mesosaurus tenuidens) Needle teeth and a flattened tail mark one of the earliest amniotes to return to water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/miragaia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/miragaia.webp Miragaia (Miragaia longicollum) At least seventeen cervical vertebrae produced an unusually long neck for a stegosaur. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/irritator 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/irritator.webp Irritator (Irritator challengeri) A long snout, conical teeth and low crest belonged to a spinosaurid that frequently ate fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/brontornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/brontornis.webp Brontornis (Brontornis burmeisteri) Massive legs and a deep beak belonged to one of South America's heaviest flightless birds. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dasornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dasornis.webp Dasornis (Dasornis emuinus) A near-six-meter wingspan and bony pseudoteeth armed a giant seabird. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/propalaeotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/propalaeotherium.webp Propalaeotherium (Propalaeotherium hassiacum) This fox-sized perissodactyl was a palaeothere relative, not a direct horse ancestor. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/metamynodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/metamynodon.webp Metamynodon (Metamynodon planifrons) Short legs, a broad body and high-set eyes adapted a hornless rhinoceros relative to semiaquatic life. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/sinomegaceros 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/sinomegaceros.webp Sinomegaceros (Sinomegaceros yabei) Palmate branching antlers made this East Asian giant deer especially conspicuous. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lepidophloios 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lepidophloios.webp Lepidophloios (Lepidophloios laricinus) Diamond leaf cushions and a repeatedly forked crown marked a tall tree-sized lycopsid. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dicranophyllum 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dicranophyllum.webp Dicranophyllum (Dicranophyllum gallicum) Narrow leaves repeatedly forked at their tips on an extinct seed-plant relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/walchia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/walchia.webp Walchia (Walchia piniformis) Needle-like leaves crowded the shoots of an early conifer-like tree. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/voltzia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/voltzia.webp Voltzia (Voltzia heterophylla) Leaves of different lengths on one shoot record an early stage of modern conifer architecture. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/taeniopteris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/taeniopteris.webp Taeniopteris (Taeniopteris multinervis) Entire strap-shaped leaves with dense side veins define a form genus rather than one secure lineage. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lithoneura 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lithoneura.webp Lithoneura (Lithoneura lameerei) Four broad net-veined wings belonged to the completely vanished palaeodictyopterans. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eugeropteron 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eugeropteron.webp Eugeropteron (Eugeropteron lunatum) A basal odonatopteran retained a more primitive wing base than modern dragonflies. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/carbotriplura 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/carbotriplura.webp Carbotriplura (Carbotriplura kukalovae) A wingless body ended in three tail filaments and combined traits of early silverfish-like insects. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tchirkovaea 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tchirkovaea.webp Tchirkovaea (Tchirkovaea guttata) Spotted wings and fine venation record Permian palaeodictyopteran diversity. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/brodioptera 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/brodioptera.webp Brodioptera (Brodioptera stricklani) Long transparent net-veined wings record an early radiation of large flying insects. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/orthrozanclus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/orthrozanclus.webp Orthrozanclus (Orthrozanclus reburrus) Scales, long spines and a small front shell combined several Cambrian body plans. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/dinomischus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/dinomischus.webp Dinomischus (Dinomischus isolatus) A cup-shaped body attached by a long stalk and opened through a petal-ringed top. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/habelia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/habelia.webp Habelia (Habelia optata) A spiny head shield and specialized appendages belonged near the chelicerate stem. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tokummia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tokummia.webp Tokummia (Tokummia katalepsis) Large pincer-like mandibles projected beneath a bivalved shell on an early mandibulate. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/odaraia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/odaraia.webp Odaraia (Odaraia alata) A broad bivalved shell enclosed most of the body and a three-pronged tail steered it. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mollisonia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mollisonia.webp Mollisonia (Mollisonia symmetrica) A tiny armored body and pincer-like front appendages suggest an early chelicerate relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/helmetia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/helmetia.webp Helmetia (Helmetia expansa) A broad flat shield with marginal spines and a leaf-like tail formed an unusual outline. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kerygmachela 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kerygmachela.webp Kerygmachela (Kerygmachela kierkegaardi) Long frontal appendages, side flaps and tail spines record a stem-panarthropod body. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/akmonistion 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/akmonistion.webp Akmonistion (Akmonistion zangerli) Males carried a striking anvil-shaped brush-and-spine complex on the back. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/echinochimaera 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/echinochimaera.webp Echinochimaera (Echinochimaera meltoni) A short snout, large eyes and pectoral structures belonged to an early chimaera relative. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/iniopteryx 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/iniopteryx.webp Iniopteryx (Iniopteryx rushlaui) High-set broad pectoral fins made this miniature holocephalan look winged underwater. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/doryaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/doryaspis.webp Doryaspis (Doryaspis nathorsti) A spear-like rostrum and lateral horns projected from this jawless armored fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/boreaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/boreaspis.webp Boreaspis (Boreaspis ceratops) A streamlined shield extended into a pointed snout and carried a stabilizing dorsal rise. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pituriaspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pituriaspis.webp Pituriaspis (Pituriaspis doylei) A long rostrum, side horns and paired openings belonged to an endemic jawless armored lineage. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aphaneramma 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aphaneramma.webp Aphaneramma (Aphaneramma rostratum) An extremely narrow snout gave this temnospondyl a gharial-like profile on an amphibian skeleton. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/melanerpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/melanerpeton.webp Melanerpeton (Melanerpeton pusillum) A tiny body and retained gill structures marked a branchiosaurid amphibian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/doleserpeton 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/doleserpeton.webp Doleserpeton (Doleserpeton annectens) A short trunk, mobile neck and ear region approach the body plan of modern amphibian ancestors. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/trematosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/trematosaurus.webp Trematosaurus (Trematosaurus brauni) A narrow sensory-grooved snout suited an open-water temnospondyl. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/uranocentrodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/uranocentrodon.webp Uranocentrodon (Uranocentrodon senekalensis) A broad flat head, strong trunk and compressed tail belonged to a large aquatic predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/claudiosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/claudiosaurus.webp Claudiosaurus (Claudiosaurus germaini) A long neck, tail and webbed feet show an early diapsid frequently entering water. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/placochelys 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/placochelys.webp Placochelys (Placochelys placodonta) A broad shell, toothless beak and crushing plates converged strongly on turtles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/coelurosauravus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/coelurosauravus.webp Coelurosauravus (Coelurosauravus jaekeli) Long independent bony rods supported one of the earliest vertebrate gliding membranes. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/erythrosuchus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/erythrosuchus.webp Erythrosuchus (Erythrosuchus africanus) An enormous deep skull sat on a relatively low body in this early archosauriform apex predator. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/thalattosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/thalattosaurus.webp Thalattosaurus (Thalattosaurus alexandrae) A long tail, paddle-like limbs and downturned snout marked a vanished marine-reptile branch. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eotyrannus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eotyrannus.webp Eotyrannus (Eotyrannus lengi) Long three-fingered arms and a light body preceded the giant two-fingered tyrannosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/mapusaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/mapusaurus.webp Mapusaurus (Mapusaurus roseae) This giant carcharodontosaurid shared plains with enormous sauropods and is known from a multi-individual bone bed. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/tarchia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/tarchia.webp Tarchia (Tarchia kielanae) Heavy skull armor, neck rings and a tail club belonged to a large Gobi ankylosaur. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/lurdusaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/lurdusaurus.webp Lurdusaurus (Lurdusaurus arenatus) Short legs, a broad trunk and giant thumb spike made an unusually low heavy iguanodontian. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/scelidosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/scelidosaurus.webp Scelidosaurus (Scelidosaurus harrisonii) Rows of armor from neck to tail mark an early split among armored dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bathornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bathornis.webp Bathornis (Bathornis grallator) Long legs and a strong beak belonged to a terrestrial bird with little or no flight. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/paraphysornis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/paraphysornis.webp Paraphysornis (Paraphysornis brasiliensis) A deep beak and massive legs made a heavyweight South American terror bird. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/psilopterus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/psilopterus.webp Psilopterus (Psilopterus bachmanni) A lighter terror bird had long toes suited to rapid pursuit. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/llallawavis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/llallawavis.webp Llallawavis (Llallawavis scagliai) Its complete inner ear reveals sensitivity to relatively low-frequency sound. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eremopezus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eremopezus.webp Eremopezus (Eremopezus eocaenus) Robust leg bones belonged to a giant flightless African bird whose skull remains unknown. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/phenacodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/phenacodus.webp Phenacodus (Phenacodus primaevus) Five-toed feet and generalized teeth record an early radiation of hoofed-mammal relatives. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeomastodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeomastodon.webp Palaeomastodon (Palaeomastodon beadnelli) A short trunk and upper and lower tusks mark an early stage of proboscidean evolution. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/barylambda 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/barylambda.webp Barylambda (Barylambda faberi) A bear-sized heavy body and five-toed feet belonged to a pantodont herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/aphelops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/aphelops.webp Aphelops (Aphelops mutilus) A hornless, long-limbed rhinoceros was built for travel across open woodland. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/hyrachyus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/hyrachyus.webp Hyrachyus (Hyrachyus modestus) A small hornless body combined traits near the early split of rhinos and tapirs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/coryphodon 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/coryphodon.webp Coryphodon (Coryphodon eocaenus) A barrel body, short legs and large canines marked one of the first widespread large mammals. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pachypteris 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pachypteris.webp Pachypteris (Pachypteris gradinarui) Thick leathery pinnules and lower-surface stomata helped this seed fern withstand seasonal dryness. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bjuvia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bjuvia.webp Bjuvia (Bjuvia simplex) Huge, nearly undivided strap leaves opened from a stout cycad-like crown. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/bennettites 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/bennettites.webp Bennettites (Bennettites) Tough pinnate leaves crowned cycad-like trunks around compact flower-like reproductive organs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/nematothallus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/nematothallus.webp Nematothallus (Nematothallus) Carbonized cell sheets and tangled tubes came from an enigmatic early terrestrial organism. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeodictyoptera 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeodictyoptera.webp Palaeodictyoptera (Palaeodictyoptera) Two pairs of net-veined wings could not fold, and some species carried thoracic winglets and piercing mouthparts. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pambdelurion 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pambdelurion.webp Pambdelurion (Pambdelurion whittingtoni) Large frontal appendages, rows of swimming flaps and an annulated soft body link lobopodians with true arthropods. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/onychodus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/onychodus.webp Onychodus (Onychodus jandemarrai) A pair of curved lower-jaw tusks and a kinetic skull helped this lobe-finned fish restrain prey. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/pteraspis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/pteraspis.webp Pteraspis (Pteraspis rostrata) A streamlined head shield extended into a rostrum, while a dorsal spine and lateral horns stabilized the jawless fish. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/cheirolepis 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/cheirolepis.webp Cheirolepis (Cheirolepis trailli) Tiny rhomboid scales, a deeply forked tail and broad gape marked an early ray-finned fish radiation. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/capetus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/capetus.webp Capetus (Capetus palustris) A broad flat skull and dense pointed teeth belonged to a large aquatic temnospondyl. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/drepanosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/drepanosaurus.webp Drepanosaurus (Drepanosaurus unguicaudatus) A sickle-shaped hand claw, grasping feet and hooked tail tip formed a highly arboreal reptile. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/effigia 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/effigia.webp Effigia (Effigia okeeffeae) A toothless beak, long neck and bipedal legs made this crocodile relative converge on later bird-like dinosaurs. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/monolophosaurus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/monolophosaurus.webp Monolophosaurus (Monolophosaurus jiangi) A single crest running from snout to skull roof gave this medium theropod a distinctive profile. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/deltadromeus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/deltadromeus.webp Deltadromeus (Deltadromeus agilis) Long hind limbs and a lightly built skeleton indicate a large, fast-moving theropod. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/jobaria 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/jobaria.webp Jobaria (Jobaria tiguidensis) A relatively short neck, strong limbs and primitive vertebrae belonged to a large non-neosauropod herbivore. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/inkayacu 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/inkayacu.webp Inkayacu (Inkayacu paracasensis) A near-human-height diving bird preserves feathers and melanosomes that opened direct study of ancient penguin color. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/kairuku 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/kairuku.webp Kairuku (Kairuku grebneffi) A slender trunk, long bill and large flippers produced a taller silhouette than modern penguins. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/palaeotherium 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/palaeotherium.webp Palaeotherium (Palaeotherium magnum) A short face, low-crowned teeth and three-toed feet belonged to a European herbivore near horse relatives. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/moropus 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/moropus.webp Moropus (Moropus elatus) A horse-like head and enormous curved claws belonged to a herbivorous perissodactyl walking on its knuckles. Original generative reconstruction; not a photograph or scientific plate. https://extinctatlas.com/species/eotitanops 2026-08-31 yearly 0.7 https://extinctatlas.com/media/species/eotitanops.webp Eotitanops (Eotitanops borealis) Only tapir-sized and hornless, it already possessed the short face and teeth of early brontotheres. Original generative reconstruction; not a photograph or scientific plate.