The first dinosaurs appeared around 225 million years ago (mya) in a time known as the Mesozoic Era. Scientists divide this era into 3 periods: the Triassic, Jurassic and Cretaceous.
Select a section of the timeline below to see dinosaurs that lived then.
Agilisaurus
Allosaurus
Apatosaurus
Archaeopteryx
Barosaurus
Brachiosaurus
Camarasaurus
Camptosaurus
Ceratosaurus
Chaoyangsaurus
Chialingosaurus
Chinshakiango-saurus
Chirostenotes
Chungkingo-saurus
Coelurus
Compsognathus
Dacentrurus
Dicraeosaurus
Diplodocus
Dryosaurus
Dubreuillosaurus
Elaphrosaurus
Euhelopus
Europasaurus
Gargoyleosaurus
Giraffatitan
Guanlong
Haplocantho-saurus
Hesperosaurus
Janenschia
Juravenator
Kentrosaurus
Lexovisaurus
Mamenchisaurus
Marshosaurus
Metriacantho-saurus
Ornitholestes
Othnielia
Piatnitzkysaurus
Saurophaganax
Seismosaurus
Stegosaurus
Torvosaurus
Tuojiangosaurus
Yangchuano-saurus
Yingshanosaurus