Dinosaurs Timeline
Late Paleozoic
450-250 Milion Years Ago.
Devonian, Carboniferous and Permian Periods.
First reptiles and amphibians.
Mesozoic
251-66 Million Years Ago.
The Triassic, Jurassic and Cretaceous periods.
The first dinosaurs in the Triassic period and the first mammals and ocean-living reptiles and birds.
Described as the "Age of the Reptiles"
Cenozoic
66-1 Million Years Ago.
Dinosaurs came to an end after their extiction.
Paleogene, Neogene and Quaternary periods.
First humans appeared.