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 ...

T. rex teeth — possibly up to six inches long — were thought by many to be too big not to protrude. In recent years, paleontologists have debunked other stereotypical portrayals of the dinosaur. Some ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study led by UCL ...

A new type of dinosaur, believed to be the largest ever discovered in Southeast Asia, has been identified. The identification came after leg bones were discovered among fossils on the side of a pond ...

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 ...

The remains of a juvenile T. rex in North Dakota were stumbled upon not by a group of skilled paleontologists, but rather by three young boys whose goal that day was to simply go for a hike. Sam ...