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 ...

"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 ...

The first vertebrates took to the skies sometime during the Triassic Period, about 225 million years ago. They weren’t birds, but pterosaurs—-ancient flying reptiles of the archosaur clade ...

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 ...

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 ... Our collection includes Triassic material from South Africa, USA, Germany and Scotland. The Jurassic and ...

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 ...

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, ...

The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs ...