The nagatitan is the largest dinosaur found in South-East Asia and weighs as much as nine elephants.

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 ...

(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 ...

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 ...

A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to be ...

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 ...

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 ...