The biggest mass extinction of all time happened 251 million years ago, at the Permian-Triassic boundary. Virtually all of life was wiped out, but the pattern of how life was killed off on land has ...

WASHINGTON (Reuters) -Scientists have unearthed in Arizona fossils from an assemblage of animals, including North America's oldest-known flying reptile, that reveal a time of transition when venerable ...

Tucked away in a remote bonebed in Arizona's Petrified Forest National Park laid hundreds of fossils, including a fragile jawbone belonging to one of the oldest-known flying reptiles: the pterosaur.

Paleontologists have found a fossilized pterosaur precursor with gnarly, scimitar-like claws and a beak, indicating that the reptilian group it belongs to was more diverse than previously thought. The ...

Prologue / Mingzhen Zhou -- Divisions of non-marine Mesozoic of China and the paleoclimatic implications based on paleobotanical data / Ge Sun -- PaleoecologiCal implications of the fishes and plants ...

The history of excavation of Permo-Triassic vertebrates from eastern Europe / Vitali G. Ochev, Mikhail V. Surkov -- The amniote faunas of the Russian Permian: implications for Late Permian terrestrial ...

The end-Triassic extinction, which happened 201 million years ago, was Earth’s third most severe extinction event since the dawn of animal life. Like today, CO 2 rise and global warming were present, ...

The mass extinction that wiped out nearly all life on Earth just before the dinosaurs evolved may have been caused by a global temperature drop rather than a rapidly warming climate. The End Triassic ...

North America's oldest known pterosaur - a creature roughly the size of a modern-day gull - would have glided over the tropical forests and braided rivers of equatorial Pangea, likely dining on fish ...