Learn about the time period that took place 251 to 199 million ... the evolution of dinosaurs and the first mammals in the late Triassic, starting around 230 million years ago.

Plesiosaurs appeared in the late Triassic period about 203 million years ago and ruled the oceans unchallenged for millions of years. One of these marine reptiles, Elasmosaurus, evolved to be ...

The Triassic covers the period from 252 to 201 million years ago. The area of present-day Baden-Württemberg was a central ...