A remarkable finding has surfaced in the colorful, fossil-rich badlands of Arizona’s Petrified Forest National Park: North America’s oldest known pterosaur. The newly identified species — a flying ...

Scientists have uncovered the shocking cause behind the mass extinction that wiped out ocean life 200 million years ago.

A 225-million-year-old leg bone from Zambia is helping scientists rethink the size, diversity, and role of early dinosaurs.

A fossilized leg bone found in Africa is reshaping our ideas about the size of the first dinosaurs. The 225-million-year-old bone belonged to a mysterious reptile group called silesaurs, which lived ...

New clues from ancient seas are reshaping what we know about mass extinction and the future of our oceans. In a recent ...

A prehistoric carbon spike turned oceans deadly and wiped out marine life. Scientists say today’s CO₂ rise could cause the ...

Smithsonian researchers have linked discoveries within Arizona’s Petrified Forest National Park with a previously unknown ...

A vertebrate fossil discovered in a rock from the Late Triassic period (approximately 220 million years ago) in Takahashi ...

A team of researchers led by the Smithsonian has discovered the oldest known pterosaur fossil in North America. Pterosaurs were flying reptiles that lived alongside dinosaurs and were the first ...