Deep in the deserts of ancient Mongolia, Tarbosaurus ruled as the apex predator of the Late Cretaceous. Closely related to ...

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 ...

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 ...