A groundbreaking discovery in Arizona’s Petrified Forest reveals North America’s oldest pterosaur.

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 ...

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

Scientists have found a new species of pterosaur that lived 200 million years ago along with the dinosaurs. The fossilised ...

Scientists have discovered a new species of pterosaur – a flying reptile that soared above the dinosaurs more than 200 ...

Meteor showers in July 2025 include the Perseids, Alpha Capricornids and Delta Aquariids. Here's when each shower peaks and how to see it in Arizona.

This artist’s rendering shows what a Triassic frog may have looked like. Paleontologists discovered a fossilized pelvic bone from the frog a year ago in Petrified Forest National Park.

In Petrified Forest National Park near Holbrook, a photo-mapping system tracks whether visitors are taking fossilized wood. “Some parks deal with people taking rocks.