Scientists have unveiled a previously unknown tyrannosaur species that fundamentally changes our understanding of how the mighty Tyrannosaurus rex evolved. The newly identified dinosaur, named ...

“The fossil, part of the legendary ‘Dueling Dinosaurs’ specimen unearthed in Montana, contains two dinosaurs locked in prehistoric combat: a Triceratops and a small-bodied tyrannosaur. That ...

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

Nanotyrannus and Tyrannosaurus both were members of a lineage of meat-eating dinosaurs called tyrannosaurs, but were not the ...

An old dinosaur debate gained new traction after a new study's findings suggesting that miniature versions of the famed Tyrannosaurus rex may actually be a distinct species. Researchers from the ...

The iconic Tyrannosaurus rex, or “T. Rex,” might need to be re-categorized into three distinct species, according to researchers. The Tyrannosaurus rex is the only recognized species of the group of ...

More than 60 million years on from its final day on Earth, there's a dinosaur we owe an apology. Paleontologists confirm that the Tyrannosaurus rex locked in combat with a Triceratops in the famous ...

For over 50 years a tiny Tyrannosaurus rex has been the subject of a scientific debate. Was it a previously unknown pygmy species—a miniature version of the iconic predator—or was it just a young T.

Tyrannosaurus rex, the king of the dinosaurs, has gained a new family member. The fragments of a fossilized skull belonging to a previously unknown species of tyrannosaur were found in southern ...

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