During the Triassic, archosaurs, "the ruling reptiles," arose and split into two groups with two surviving representatives: birds, the descendants of dinosaurs, and crocodilians (alligators ...

Learn about the time period that took place 251 to 199 million years ago. 3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a ...

The Museum's crocodylomorph and early archosaur collections include an estimated 5,000 specimens ... UK and the USA. Our collection includes Triassic material from South Africa, USA, Germany and ...

"Dinosaurs were latecomers to the Triassic reptile party. They showed up well after many dinosaur-looking reptiles were established across our planet." Archosaurs are reptiles that are divided ...

A herd of primitive carnivorous dinosaurs (Coelophysis, foreground) is enveloped by a sandstorm, while a large carnivorous crocodile-like archosaur (Postosuchus) and several early sauropodomorph ...

Earth’s continents are constantly shifting. About 252 to 199 million years ago, all the continents were actually one huge “supercontinent” surrounded by one enormous ocean. Slowly, this ...

which is a sister group to archosaurs. The earliest known turtle was called Eunotosaurus. Some turtle and tortoise adaptations, such as their hard shells, evolved during the Triassic and Jurassic ...

Dinosaurs are archosaurs, a larger group of reptiles that first appeared about 251 million years ago, near the start of the Triassic Period. Some other non-dinosaur reptiles are also archosaurs, ...