Many people imagine Stegosaurus and Tyrannosaurus rex living side by side, but the fossil record shows they were separated by ...

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

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

At least five groups of two-legged, mostly meat-eating theropod dinosaurs experienced a shortening of the upper arms over the course of their evolutionary journey. But why did they have such comically ...

The study says the T. rex evolved to have an extremely strong skull, and since evolution tends to prefer perfecting one ...

Pigeon GPS lies in their liver, an archival interview with the woman who discovered pulsars, researchers found a network of ...

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

Some scientists have suggested a different idea: T. rex’s arms may have evolved to be smaller as another body part grew ...

The new animal, based on a single fossil smuggled out of China and eventually sold to a private collector, has been named Raptorex-- which means "king raptor." It lived 125 million years ago in a lake ...

Add Yahoo as a preferred source to see more of our stories on Google. A newly identified dinosaur species from Mongolia is rewriting the history of the T. rex family tree. Dubbed the “Dragon Prince” ...