What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology's ...

For more than three decades, paleontologists have argued over whether a lithe predatory dinosaur called Nanotyrannus ever ...

After decades of fierce debate, researchers say fossils once thought to be juvenile T. rex actually belong to a separate, ...

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

By Will Dunham WASHINGTON (Reuters) -At the twilight of the age of dinosaurs, an agile and vicious predator named ...

Specifically, whether or not certain fossils found in Montana belonged to a young Tyrannosaurus rex or a completely separate, ...

For decades, paleontologists debated whether fossils were of a young T. rex or a species called nanotyrannus. A new study ...

Paleontologists have long debated whether small tyrannosaurs were their own species or simply teenage T. rexes. This debate ...

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

The new species is called Nanotyrannus. Compared to the well known tyrannosaurus rex, a nanotyrannus was more speedy and ...

A new study reveals that fossils once believed to belong to a teenage Tyrannosaurus rex may actually belong to a separate species ...

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