Reptiles first appear in the fossil record 315 million years ago and were the dominant animals during the Mesozoic era, which lasted for 270 million years until the extinction of the dinosaurs.

Millions of years ago, as dinosaur giants were stomping around on land, other giant reptiles were dominating the oceans — and some of them, like plesiosaurs and similar animals, grew extremely ...

MADDIE: That is a gorgeous bird! Now let’s find out more about reptiles.Reptiles are a group of animals with scaly skin. Unlike us mammals, reptiles are cold-blooded, which means they don’t ...