Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or ...

Beneath layers of ancient sediment and time, a small but game-changing dinosaur skull emerged from the earth, as if it had ...

A new pachycephalosaur, officially named Zavacephale rinpoche, was described in the journal Nature. The word rinpoche is ...

Now, a research team says new evidence resolves the case. The latest clue comes from a complete skeleton — first uncovered in Montana in 2006 — that scientists say identifies the mystery reptile as ...

An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a ...

Paleontologists in Argentina have discovered a new predatory dinosaur -- the fossils of which contained a crocodile bone within the dinosaur's mouth.

Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely ...

The skeletons of a duck-billed dinosaur found more than 100 years ago are so well-preserved that they contain fleshy body ...

The cast of the skull of Nigersaurus. The fossil skull of Nigersaurus was one of the first dinosaur skulls to be digitally reconstructed from CT scans. Photograph by Ira Block, Nat Geo Image ...

It was a gray morning on the steppes of central Mongolia when paleontologist Tsogtbaatar Chinzorig spotted something glinting on a distant slope. It was not a rock.

Scientists have discovered a new dinosaur with powerful claws, feasting on an ancient crocodile bone. The new find was possibly 23 feet (7 meters) long and hailed from a mysterious group of dinosaurs ...

A paleontologist from Colorado is one of two dinosaur experts who are announcing a new discovery this week. The dinosaur is called a Lokiceratops rangiformis, and there's a fun story behind the name.