theres nothing called priassic,its triassic
Triassic
Dimetrodon live in the Permian period, which was before the dinosaurs.
pre historic era
Dogs did not live during the time of the dinosaurs. There were no known mammals on Earth during that period.
Mesozoic Era
Dinosaurs lived in the Jurassic Period over 145 to 200 million years ago. Dinosaurs became extinct during the Triassic period.
I do not really no but it was in the acient years
worldwide and about 150'000'000 years ago.
t rex
I'm not exactly sure, but they came after the dinosaurs, and are famous for the ice age.
None-avian dinosaurs first appeared in the Triassic period and were the dominant land vertebrates through the Jurassic and Cretaceous periods. At the end of the Cretaceous period, 65.5 million years ago, all non-avian dinosaurs went extinct. Birds, which are now classified as dinosaurs, continue to live to his day.
The first mammals appeared in the Triassic Period of the Mesozoic Era, when dinosaurs had already been present for at least 9 million years.