The Triassic Period was a time of great change ... when the archosaurian reptiles, which includes the dinosaurs, came to dominate.' The cause of the Permian-Triassic extinction event is not fully ...

For decades, scientists have debated what wiped out the dinosaurs 66 million years ago. The usual suspects? A massive ...

Imagine a world before dinosaurs, where the land was ruled by toothy predators with a terrifying bite. Long before the famous ...

Though the End-Permian mass extinction event is predicted to have killed off 80% of all life on Earth, new research is ...

Dinosaurs evolved from a group of reptiles called archosaurs (“ruling reptiles”) around 240–250 million years ago. This was during the Triassic period. This branch of the tree of life gave ...

During the Permian-Triassic extinction ... Africa shows the dynamic nature of prehistoric ecosystems. As the Permian period drew to a close, many top predators in southern regions went extinct.

The rise of mammals The earliest known mammals first appeared about 225 to 200 million years ago during the late Triassic period. This was about the same time that the earliest dinosaurs first ...

Many of the dinosaurs detected in that period were Ceratopsian dinosaurs, such as Triceratops (Alfio Alessandro Chiarenza) Researchers also estimated the likelihood of the four dinosaur types ...

The museum's paleontology exhibit showcases fossils from the Ice Age to the late Triassic ... from the Permian Period, around 275 million years ago, the last period before the age of dinosaurs.

a 300-foot-thick bed of sandstone and mudstone that dates to a period between 66 million and 67.5 million years ago, the time just before dinosaurs went extinct. Stretching across the Dakotas and ...

Footprints of armored dinosaurs with tail clubs have been identified ... The tracks date back to the middle of the Cretaceous period, about 100 to 94 million years ago. No bones from ankylosaurids ...