Some scientists have suggested a different idea: T. rex’s arms may have evolved to be smaller as another body part grew larger. The fossil record reveals that arms got shorter as theropod skulls got ...

A fractured rib from the largest Tyrannosaurus rex ever described has yielded something paleontologists once thought ...

A great Tyrannosaurus rex strides through the conifer trees of her territory, sniffing the air. She picks up the scent from ...

The Tyrannosaurus rex seemingly came out of nowhere tens of millions of years ago, with its monstrous teeth and powerful jaws dominating the end of the age of the dinosaurs. How it came to be is among ...

(Reuters) - A rare fossil of an adolescent Tyrannosaurus rex has been excavated in North Dakota's badlands - a find noteworthy for the scientific insight it may offer into the life history of this ...

Since its discovery in 1902, there’s only been one known type of Tyrannosaurus: the rex. However, a new study says there were three types of Tyrannosaurus, based on differences in fossils' femurs and ...

That's one gigantic dinosaur. Paleontologists at the University of Alberta recently reported the world's largest Tyrannosaurus rex, and the biggest dinosaur skeleton ever found in Canada. The enormous ...

The jaw of the Tyrannosaurus Rex had sensitive nerves that may have allowed it to differentiate between parts of its prey, a new study found. By Maria Cramer Was the Tyrannosaurus Rex a foodie? The ...

Paleontologists have just reported the world's biggest Tyrannosaurus rex and the largest dinosaur skeleton ever found in Canada. The 13-metre-long T. rex, nicknamed 'Scotty,' lived in prehistoric ...