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 ...

The Tyrannosaurus rex is among the most well-known dinosaurs. Huge skull, massive teeth, a body weighing tons—and then those tiny arms. Few features of the famous predator seem as odd at first ...

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

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

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 ...

Scientists may have finally solved the mystery of why Tyrannosaurus rex had such tiny arms. T. rexes were 40 feet long and ...

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 ...