Fossils from New Mexico change how we look at dinosaur history.

"For the first time, we have a complete, detailed picture of a large dinosaur that we are really convinced of." ...

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

By working with the two mummies, the researchers were also able to determine that Edmontosaurus could likely grow over 40 ...

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

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

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to the paper. Earlier research suggested it belonged to a young T. rex, but ...