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 ...

A tooth fragment found in the skull of a fossilized dinosaur sheds light on the Tyrannosaurus rex’s feeding habits.

We all know dinosaurs were scary. Tyrannosaurus rex was one of the largest land carnivores of all time, weighing between ...