Dinosaurs / Periods
The three dinosaur periods
Dinosaurs lived for about 186 million years. Geologists split that span into the Triassic, Jurassic and Cretaceous.
Triassic251.9 to 201.4 Ma, 31 generaJurassic201.4 to 143.1 Ma, 116 generaCretaceous143.1 to 66 Ma, 305 genera
Pick a period for its climate, continents and key events, or open the timeline to see every genus as a bar across the whole span.