T. rex's long legs were made for marathon walking

Long legs may make good runners, but they're great for walking, too. Scientists have generally assumed that long-limbed dinosaurs evolved their leggy proportions for speed to catch prey and avoid predators.

What did T. rex eat? Each other

It turns out that the undisputed king of the dinosaurs, Tyrannosaurus rex, didn't just eat other dinosaurs but also each other. Paleontologists from the United States and Canada have found bite marks on the giants' bones ...

T. rex was not feathery, study says

Tyrannosaurus rex had scales, not feathers, said a study Wednesday which rescues the giant lizard's reputation as a fearsome killer with a rough-and-tough hide.

Big bang theory: How did dinosaurs have sex?

Dinosaurs were the largest animals to ever walk Earth, and they ruled the planet for more than 160 million years. The long-necked Argentinosaurus, with back vertebrae almost two metres high, possibly grew to 30 metres long ...

Bizarre new horned tyrannosaur from Asia described

Now, just a few weeks after tiny, early Raptorex kriegsteini was unveiled, a new wrench has been thrown into the family tree of the tyrannosaurs. The new Alioramus altai—a horned, long-snouted, gracile cousin of Tyrannosaurus ...

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