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

Fossils paleontologists initially thought belonged to a juvenile Tyrannosaurus rex actually belong to a new species of ...

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis.

A sculpture prepared by the Natural History Museum of Los Angeles County shows what scientists believe the dinosaur Augustynolophus looked like. The only two specimens ever found of the dinosaur were ...