While the world famous Tyrannosaurus rex was roaming the Hell Creek Formation of central North America, its slightly less well known cousin was presiding over the scrubland and plains of Mongolia.

Those structures had to be made of something, possibly proteins, Schweitzer reasoned, launching her quest to recover remnants ...

Teeth are probably one of the first things that come to mind when you imagine a T-Rex. But now experts say that unlike the film Jurassic park, where the tyrannosaurus' toothy grin is ever-present, the ...