A new study has found that the T. rex's arms evolved to become smaller at the same time as its head grew to catch more prey ...

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

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

Mighty meat-eating dinosaurs like Tyrannosaurus rex had tiny arms because they used their powerful heads as the primary ...

Just when you thought it was safe to go back in the water, scientists have discovered a giant, bus-size sea predator that was ...

They were once one of the most fearsome dinosaurs to roam the earth, with an enormous set of teeth, but why did the T.rex ...

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

Scientists figured out that the predators were lumped in with a previously named mosasaur species. The new one, called Tylosaurus rex, could grow to 43 feet long, about the length of a school bus ...

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

“Besides being huge, roughly twice the length of the largest great white sharks, T-rex appeared to be a much meaner animal ...

One question dinosaur lovers have asked for years is what would happen if Tyrannosaurus rex and Spinosaurus ever met in ...