By the end of the Middle Triassic, the synapsids were in decline and a diverse range of archosaurs had appeared. ' The archosaurs were a component of the diapsid lineage, which includes many ...

Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

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 ...

which is a sister group to archosaurs. The earliest known turtle was called Eunotosaurus. Some turtle and tortoise ...

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 ...

During the Triassic period, a variety of animals emerged ... They existed for 30 million years and may have been a precursor to bird-line archosaurs, which are the ancestors of modern-day birds ...

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 ...

The Triassic period, spanning 252 to 201 million years ago, was crucial for the evolution of terrestrial tetrapods, including early dinosaurs, mammalian ancestors, and crocodile relatives.

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 ...