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

In the remote reaches of Arizona s Petrified Forest National Park, scientists have unearthed North America's oldest known pterosaur a small, gull-sized flier that once soared above Triassic ecosystems ...

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

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

Scientists have unearthed in Arizona fossils from an assemblage of animals, including North America's oldest-known flying ...

A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a ...

Shell-rich rocks trace a mostly upward climb in ocean life, with each mass extinction slashing both diversity and biomass ...

Around 252 million years ago, Earth was nearly lifeless, with nearly all life forms wiped out. This event, known as the ...

The newly found fossils are 209 million years old and include at least 16 vertebrate species, seven of them previously unknown.

How did ancient extinction events contribute to global climate change? This is what a recent study published in Nature ...

A 259-million-year-old fossil skull of Yinshanosaurus angustus has been found, filling a key evolutionary gap in ...