Fossils are so common in Pennsylvania Bluestone that Glass often points out prehistoric plant fragments and ancient tide ...

A paleontologist has unearthed in Texas an ancient semi-aquatic dinosaur that has a goofy-looking head and skeleton.

The big sky country of the western North America is a world-renowned dinosaur playground. Household-name dinosaurs like ...

For theropod dinosaurs around 100 million years ago, the answer was probably a lek. A lek, or a lekking site, is a special ...

The speedy, plant-eating creature lived in what is now Colorado roughly 150 million years ago, and its skeleton went on ...