Dinosaur Valley State Park draws thousands of visitors each year to see some of the best-preserved dinosaur tracks in the world. But some locals fear that view could soon include something far more ...

A fossil reveals the existence of Athenar bermani, a new sauropod that redefines the family tree of Utah's giants.

The bonebed contains the 21-million-year-old remains of sea cows, sharks, barracuda-like fish, prehistoric dolphins and sea ...

The recently acquired skull of the dome-headed dinosaur Pachycephalosaurus. USNM PAL 803273, Department of Paleobiology, Smithsonian Institution. Gift of Eric and Wendy Schmidt. Photo by James D.

Paleontologists counted the record-setting tracks and uncovered evidence of dinosaurs swimming and dragging their tails along ...

Researchers say the specimen will help them learn about the ‘weird, odd, wonderful, mysterious’ Pachycephalosaurus.