A new dinosaur species may be the closest known relative of Tyrannosaurus rex, a new study suggests. The research reshapes scientists’ understanding of how the most famous dinosaur – T. rex – might ...

Despite films like "Jurassic Park" depicting Tyrannosaurus rex as nothing more than a stupid killing machine, Dr. Suzana Herculano-Houzel believes the mighty dinosaur "deserves better." By analyzing ...

WASHINGTON (Reuters) -Tyrannosaurus subdued prey with raw power, using bone-crushing bite force. But other meat-eating dinosaurs that rivaled T. rex in size used different approaches. Giganotosaurus ...

Billions of Tyrannosaurus rex roamed North America during their fascinating reign as top predators, according to a team of researchers that went about the daunting task of making the calculation.

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 ...