Scientists have unearthed in Mongolia the oldest and most complete fossil of a pachycephalosaur, a group of dinosaurs known for their dome-shaped skulls, according to a new study published Wednesday ...

A "teenaged" pachycephalosaur from Mongolia's Gobi Desert may provide answers to lingering questions around the dinosaur group, according to new research published today in the journal Nature. The ...

A rare fossil from Thailand identifies a 25-foot spinosaurid that lived along river systems 125 million years ago.

A remarkably well-preserved dinosaur embryo, unearthed from a fossilized egg in southern China, is offering scientists an extraordinary window into the evolutionary origins of bird-like behavior.

DENVER — One of the most complete Triceratops fossils ever unearthed is now being shown at the Denver Museum of Nature and Science. On Friday, the museum announced its historic discovery of the fossil ...

It’s known as the “Dueling Dinosaurs” fossil: A triceratops and a tyrannosaur, skeletons entangled, locked in apparent combat right up until the moment of their mutual demise. Even in the Hell Creek ...