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 ...

Paleontologists have long hailed Tyrannosaurus rex as king of the dinosaurs. Now, the name "T. rex" also belongs to a newly ...

Tylosaurus rex rewrites the story of giant sea predators, not just for its size but for what its bones reveal about mosasaur ...

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

A groundbreaking study reveals Tyrannosaurus rex's famously tiny arms were a result of evolutionary trade-offs. As its skull ...

This newly identified apex predator roamed the prehistoric oceans nearly 80 million years ago, growing to a length of 43 feet ...

On Thursday, researchers at the American Museum of Natural History, the Perot Museum of Nature and Science, and Southern ...

A new study documents that the robustness of skulls in carnivorous dinosaurs began to evolve first, a direct response to the increasing size of the plant-eating dinosaurs they hunted, shortly after di ...

A colossal new sea predator named Tylosaurus rex has been identified from fossils found in Texas, revealing a brutal 43-foot-long hunter that ruled ancient oceans 80 million years ago. The discovery ...

A new study suggests that certain theropods—two-legged, mostly meat-eating dinosaurs—had shrunken forelimbs as an evolutionary trade-off for their strong skulls ...

A fossil discovered in New Mexico could rewrite the history of dinosaurs by revealing a giant tyrannosaur that predates T.

By Will Dunham May 29 (Reuters) - Tyrannosaurus rex possessed a preposterously massive skull - 5 feet long (1.5 meters) and ...