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

WASHINGTON (Reuters) -At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled ...

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

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

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

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical ...

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

New research confirms the Nanotyrannus dinosaur was not a young T. rex, but a separate species, reshaping our view of ...

A fossil once locked in prehistoric combat has just rewritten one of paleontology’s longest-running debates — and upended what scientists thought they knew about Tyrannosaurus rex.

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

The “dueling dinosaur” fossil still leaves more questions than answers as scientists now attempt to determine their causes of ...

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