266Mesozoic
Thrinaxodon
Thrinaxodon liorhinus
A small Early Triassic cynodont with differentiated teeth, known from skeletons curled inside fossil burrows in South Africa.
LIFE ARCHIVE
570 vanished lives
Browse extinct life from traces nearly 1.9 billion years old to historically recorded extinctions.
Explore geological time
Paleozoic
- Cambrian538.8–486.85 million years ago34 records ↗
- Ordovician486.85–443.1 million years ago12 records ↗
- Silurian443.1–419.62 million years ago14 records ↗
- Devonian419.62–358.86 million years ago41 records ↗
- Carboniferous358.86–298.9 million years ago61 records ↗
- Permian298.9–251.902 million years ago51 records ↗
Geography
Explore the atlas by continent, country and state. Follow fossil localities into regional guides, compare animals across time and return to the evidence in each species profile.
Dinosaurs by continent
Countries and states
- Dinosaurs Found in Utah: Jurassic Giants & Utahraptor4 atlas records ↗
- Dinosaurs Found in Colorado: Stegosaurus & Garden Park Fossils3 atlas records ↗
- Dinosaurs Found in California: Fossils & Local EvidenceLocal fossil evidence ↗
- Dinosaurs of the United States14 atlas records ↗
- Dinosaurs Found in Canada: Species, Fossils & Evidence7 atlas records ↗
- Dinosaurs of the United Kingdom5 atlas records ↗
- Dinosaurs Found in Texas1 atlas records ↗
- Dinosaurs Found in Montana4 atlas records ↗
- Dinosaurs Found in Argentina11 atlas records ↗
- Dinosaurs Found in China10 atlas records ↗
FIELD GUIDES
Field guides
Giants, strange body plans and lives within human memory. Follow a question into the atlas, then explore the animals behind it.
