Gus is about 12.5-feet-tall, 38-feet-long, and could fetch the highest price for any dinosaur ever sold at auction.

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet ...

An analysis of 85 dinosaur species shows that tiny forearms in meat-eating dinosaurs were the result of an evolutionary trade ...

Tyrannosaurus rex is often seen as the unstoppable king of the dinosaurs, but life in the Hell Creek ecosystem was far from ...

By Will Dunham May 28 (Reuters) - Tyrannosaurus rex was a huge land predator during the twilight of the age of dinosaurs. But ...

The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest marine predators of the dinosaur age.

A new study suggests that certain theropods—two-legged, mostly meat-eating dinosaurs—had shrunken forelimbs as an ...

A new study explores the reason why the dinosaur T. rex has tiny arms.

Paleontologists believe that the real T. rex sound was nothing like the roar you hear in the movies. But it's still terrifying! Since the T. rex is one of the most famous predators to ever live, film ...