Mark Kelly and Ruben Gallego, both Democrats, on Tuesday introduced legislation to designate Chiricahua National Monument in ...

Arizona is home to more than three dozen national parks, sites and monuments. These 10 easy to moderate hikes show off 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.

Plan your adventure to Arizona’s most beautiful natural wonders, where unforgettable landscapes feel almost unreal.

Researchers found North America’s oldest known pterosaur. Arizona’s Petrified Forest National Park has done it again. The famed fossil-rich ground has provided paleontologists a remarkable finding, ...

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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 ...