The Petrified Forest and Painted Desert are uniquely Arizona road trip destinations. Here's why it's worth the drive and what to see along the way.

Dinosaur fossils discovered by paleontologists working with the University of Wisconsin-Madison have been determined to be the oldest-known fossils, presenting evidence that the species was in ...

The vertebra belonged to a juvenile Azhdarchid pterosaur, a species of giant, prehistoric flying reptile with bones similar to birds, making them thin and typically poorly preserved, researchers said.