Add Yahoo as a preferred source to see more of our stories on Google. Artist's reconstruction of a landscape dating to 209 million years ago at the site of Petrified Forest National Park in Arizona By ...

This Arizona amusement center brings dinosaurs and family fun together for a playful outing kids will be talking about long ...

PHOENIX — Fossils from the Petrified Forest National Park, in northern Arizona, revealed a new reptile species that thrived during the Triassic Period. Paleontologists and partners with the ...

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.

A life-size skeletal model of Scutellosaurus, one of the earliest known armored dinosaurs, is now on display next to the ...

Kay Behrensmeyer, curator of vertebrate paleontology at the Smithsonian’s National Museum of Natural History, is shown in Arizona’s Petrified Forest National Park. Photo by Ben Kligman A fossil from a ...

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 ...