During the Triassic period nearly 250 million years ago, a small reptile scurried after insects in the canopy of a lush ...

Since the first sharks emerged in the world’s oceans nearly half a billion years ago, the world has gone through five major ...

Roughly 252 million years ago, Earth experienced its deadliest known extinction. Known as the Permian–Triassic Mass ...

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

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 lineages that were ...

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

The newly-found fossils are 209 million years old and include pterosaurs, primitive frogs and lizard-like reptiles ...

Paleontologists know the bone bed as PFV 393. The late fossil preparator Bill Amaral found the site in 2011 on a field trip ...

A Smithsonian-led research team has discovered the oldest known pterosaur in North America, a sea gull-sized winged reptile ...

Around 252 million years ago, Earth was nearly lifeless, with nearly all life forms wiped out. This event, known as the Permian–Triassic mass extinction, or the Great Dying, was the most catastrophic ...

Rauisuchians, phytosaurs and some other lineages represented in the fossils disappeared in the end-Triassic extinction event.