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

It’s a known fact that Tyrannosaurus rex dinosaurs have small arms — but why? Scientists now believe they have cracked the ...

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

Come July, a Tyrannosaurus rex fossil is going under the hammer at Sotheby’s New York, with a colossal estimate to match.

A T. rex named Gus is set to be auctioned with the highest estimate ever placed on a dinosaur. One of the most complete ...

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 ...

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

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so ...

A Royal Society research paper published May 20 suggests that T. rex, which averaged more than 40 feet long with arms ...

Triceratops was one of the largest and most formidable herbivores of the Late Cretaceous, weighing up to 12 tons and carrying ...

A 67-million-year-old T. rex fossil found on a South Dakota cattle ranch nicknamed 'Gus' could sell for up to $30 million at ...

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 ...