"T-Rex" means tyrannosaurus Rex. T-Rex appeared during the beginning of Jurassic about 205 million years ago just after the End Triassic mass extinction. They lived for 140 million years during the entire Jurassic and Cretaceous Period. During the Mesozoic Era, the only time T-Rex didn't exist is during Triassic period.
Yes because when we are not exist yet dinosaurs rule the earth but today there are no dinosaurs here.
del alamos
== == Perhaps. Remeber the dinosaurs. Ah yes, the dinosaurs. Probably not, but that would be cool. Yea, dinosaurs... dinosaurs are awesome. Sh'yeah! They already do!
The Mesozoic era.
For about 78 Million years.Mr. Seidschlag
160-165 million years ago
They did not literally rule the Earth. This is an expression that is meant to explain that dinosaurs were the dominant group of animals on Earth at a time and were (usually) at the top of the food chain.
From about 230 million to 65 million years ago during the Mesozoic era.
Yes. Dinosaurs were the dominant land vertebrates from about 200 million years ago to about 65 million years ago (A bit longer if you count a few million years when birds where dominant). Mammals then took over some time after non-avian dinosaurs went extinct.
Dinosaurs never "ruled" the planet because God gave humans the dominion over the world. Answer 2 When they were alive they were the dominant group, as it were. They didn't rule in the aspect that they considered it theirs, as far as we know. But they were the dominant group for a long time before they got wiped out, leaving the way free for the mammals to grow and adapt.
HA! there are no genetic mutations! DINOSAURS ARE DINOSAURS! DINOSAURS ARE DINOSAURS! no mutants
Dinosaurs Dinosaurs Dinosaurs - 1985 TV was released on: USA: 1985