Paleontologist Peter Makovicky is seen at the excavation site in Argentina's northern Patagonia region where fossils of the Cretaceous Period meat-eating dinosaur Meraxes gigas, Akiko Shinya via ...

Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a tyrannosaur skull to ...

Paleontologists for decades debated whether meat-eating dinosaur Nanotyrannus was actually just a juvenile Tyrannosaurus. But ...

A case of mistaken identity seemingly finally settled this week could shake up vast swathes of what we thought we knew about the most ferocious of dinosaurs—Tyrannosaurus rex. For years, ...

(CNN) — A legendary fossil housed at the North Carolina Museum of Natural Sciences in Raleigh features skeletons apparently locked in prehistoric combat — an epic meeting of two of the world’s ...

The 67 million-year-old fossils were found in Hell Creek Formation in Montana. Fossils paleontologists initially thought belonged to a juvenile Tyrannosaurus rex actually belong to a new species of ...