Now, a research team says new evidence resolves the case. The latest clue comes from a complete skeleton — first uncovered in ...

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

At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled western North America, resembling a smaller version of Tyrannosaurus - about a tenth the body mass - ...

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 ...

History’s most frightening dinosaur, the Tyrannosaurus rex, came from a long line of pipsqueaks. Scientists have identified a new cousin of the T. rex that reached only the 3-foot height of a toddler.

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 ...