Arizonasaurus was an archosaur from the Middle Triassic. Dinosaurs evolved from a group of reptiles called archosaurs (“ruling reptiles”) around 240–250 million years ago. This was during the Triassic ...

When it comes to studying dinosaurs, not all fossils are created equal. Some, unearthed in pristine condition, serve as ...

Long before dinosaurs became dominant, the Triassic world was ruled by archosaurs whose true behavior is still debated by ...

In Paraíso do Sul in southern Brazil, scientists discovered a fossil of a dog-sized reptile dating back to 237 million years ago. The creature, a newly described species named Gondwanax paraisensis, ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. The mass extinction that wiped out nearly all life on Earth just before the dinosaurs evolved may have been caused by a ...

A newly discovered ancient crocodile cousin from a 210-million-year-old Triassic crocodile fossil reveals a powerful ...

CINCINNATI (WKRC) - Are you a fan of dragons? If so, you may have reason to celebrate a recent discovery. The discoveries are in relation to the dinocephalosaurus orientalis, a dinosaur that lived ...

A distorted dinosaur skull, once dismissed as unusable, became the focus of a detailed digital reconstruction that revealed ...

Steve Brusatte, an evolutionary biologist who specializes in dinosaur anatomy and evolution, gave a lecture on the rise and fall of dinosaurs in Kane Hall on April 24. Presenting to a room of all ages ...

Researchers have conducted what could be the largest study ever of dinosaur poop. The findings shed new light on how dinosaur's diets allowed them to dominate the planet. The analysis of hundreds of ...

WASHINGTON (Reuters) - Dinosaurs long dominated Earth's land ecosystems with a multitude of forms including plant-eating giants like Argentinosaurus, meat-eating brutes like Tyrannosaurus and weirdos ...