If you thought that crocodiles were menacing enough, be glad that you didn’t live in Arizona some 225–201 million years ...

Where some visitors see unparalleled natural beauty, others feel "underwhelmed" at an Arizona spot named among most ...

Learn how fossils from Arizona’s Petrified Forest National Park revealed that a Late Triassic crocodile relative may have started life on four legs before walking on two as an adult.

Researchers believe these creatures started out on four legs and later began walking on two legs as they grew.

The Petrified Forest National Park is Arizona's least visited national park. I stopped at the park on a recent road trip across America's Southwest. I discovered colorful fossilized logs, uncovered ...

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.

Petrified Forest National Park may not ring a bell, even though more than half a million people visited last year, according to National Park Service data. The park is right off Interstate 40 in ...

Nestled in the rugged terrain of northeastern Arizona lies the Painted Desert, a geological marvel that captivates visitors with its vibrant colors and ancient history. Spanning over 7,500 square ...

PHOENIX — Petrified Forest National Park announced the sightings of Yellow-billed Cuckoo, a threatened bird along the Puerco River within the park. One individual bird was heard on July 15 and another ...

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 ...