"Will this be the biggest T-Rex ever found? That remains to be seen. He may just have a big head and big teeth. Animals are ...

A new hypothesis for the evolution of the T. rex’s short arms was formulated by Kevin Padian, UC Berkeley professor emeritus of integrative biology and curator of paleontology at the UC Museum of ...

A new analysis of fossils believed to be juveniles of T. rex now shows they were adults of a small tyrannosaur, with narrower jaws, longer legs, and bigger arms than T. rex. The species, Nanotyrannus ...

The Nanotyrannus, by contrast, had longer legs and was built more like an ostrich or a horse. Napoli suggested it was likely a pursuit predator, chasing and hunting smaller prey. So, given that the ...

Scotty, the largest T. rex specimen on record, is on display at the Royal Saskatchewan Museum in Canada. Kumiko via Wikimedia Commons under CC BY-SA 2.0 Around 66 million years ago, the iconic and ...