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Dinosaurs Found in California: Fossils & Local Evidence
Meet Augustynolophus and Aletopelta through California fossil discoveries. Separate local dinosaur evidence from Ice Age fossils and museum specimens found elsewhere.
Places, environments and evidence
California does have non-avian dinosaur fossils. Two particularly useful examples are the hadrosaur Augustynolophus morrisi and the armoured dinosaur Aletopelta coombsi. Both are known from Cretaceous discoveries in the state. They are not yet separate species profiles in this atlas, so the museum evidence below provides the direct route to those finds.
Augustynolophus: California's state dinosaur
Augustynolophus morrisi was a plant-eating hadrosaur. The Los Angeles museum holds the two known specimens highlighted in its account. Their California discovery history, rather than their present museum address, establishes the local connection.
Natural History Museum of Los Angeles County · Augustynolophus ↗
Aletopelta: an armoured dinosaur from Carlsbad
The partial skeleton found during construction in Carlsbad was named Aletopelta coombsi in 2001. Bones, teeth and armour provide evidence for an ankylosaurian dinosaur. Marine burial does not turn the animal into a swimming sea reptile: a carcass can be transported before burial.
Keep the Cretaceous separate from the Ice Age
The state dinosaur belongs to the Late Cretaceous, tens of millions of years before California's famous Ice Age mammals. These records tell different chapters of the state's history; a geographic list should not imply they lived together.
No matching species profiles are currently in the atlas. The sourced regional guide above describes local dinosaurs; follow the museum references below for examples.
Common questions
Does a dinosaur in a California museum prove it lived in California?
No. Museums display fossils and casts from many places. A California occurrence needs a documented discovery locality, not just the address of the museum. Mammoths and sabre-toothed cats from the Ice Age are also not non-avian dinosaurs.