The Dinosaur National Monument, which is located on the border between Colorado and Utah, was last excavated in 1924.

Workers at Dinosaur National Monument uncovered a long-necked dinosaur fossil during asphalt removal.

Newtonsaurus cambrensis is very large, larger than most, if not all, contemporary predators. For a therapod dinosaur from the Triassic era to be so large is essentially unprecedented. Scientists in ...

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 ...

Scientists in the United Kingdom have managed to identify a new species of dinosaur from a fossil found over 125 years ago, according to a recent study. The dinosaur fossil in question had been on ...