The complete world of dinosaurs, properly organized.

A living taxonomy built from real fossil data — every lineage, every era, traced from first appearance to extinction. One lineage never went extinct at all; it's outside your window right now.

2722 genera catalogued · 5 lineages live · growing weekly

An imagined Late Cretaceous scene with Tyrannosaurus, Triceratops, Ankylosaurus, and other dinosaurs

298 million years, one bar

Permian → today

Permian

Triassic

Jurassic

Cretaceous

Cenozoic

End-Ordovician443.8 MYAFirst of the Big Five — long before dinosaurs

Late Devonian372 MYAProlonged reef collapse

Permian–Triassic251.9 MYA“The Great Dying” — up to 96% of species lost

Triassic–Jurassic201.4 MYAClears the way for dinosaurs to dominate

Cretaceous–Paleogene66 MYAAsteroid impact ends the non-avian dinosaurs

Hover the markers for the five events that reshaped life on Earth — dinosaurs lived through the last three and were ended by the fifth.

Horned & domed dinosaurs

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