Petrified Forest National Park is the only national park in the U.S. with a section of old Route 66. The park is also home to a "rainbow" forest, which has colorful tree fossils that are more than 200 ...

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.

Arizona's Petrified Forest National Park has done it again. The famed fossil-rich ground has provided paleontologists a remarkable finding, this time the discovery of North America's oldest known ...

Petrified Forest National Park is one of the most surprising places in the American Southwest. It’s an otherworldly mix of colorful badlands, ancient petroglyphs, historic Route 66 nostalgia, and the ...

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 ...