Fossils found in New Mexico belong to a previously undiscovered species of small tyrannosauroids that lived 92 million years ago, cousins of the much larger Tyrannosaurus rex. They shed light on how ...

A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to be ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The Uplift," ...

Researchers say the species they named Tyrannosaurus mcraeensis predated the dinosaur era’s great predator. By Asher Elbein A team of researchers have announced the discovery of a new species of ...

Since its discovery in 1902, there’s only been one known type of Tyrannosaurus: the rex. However, a new study says there were three types of Tyrannosaurus, based on differences in fossils' femurs and ...

Gouge marks in dinosaur fossils were giveaway to young researcher. Oct. 15, 2010— -- What did Tyrannosaurus rex eat? To some extent, say researchers, they ate each other. The less-than-appetizing ...