Tyrannosaurus rex was one of the ... valleys in western North America during the late Cretaceous period, 68 million years ago. Although T. rex is a household name, what we know about this ...

AlthoughJurassic World: Camp Cretaceousand Jurassic World ... including multiple sightings of the well-known Tyrannosaurus rex, as well as encounters with the terrifying Carnotaurus.

At the end of the Cretaceous period, only one mega-predatory dinosaur ruled North America: Tyrannosaurus rex. The Borealopelta was alive around the mid-Cretaceous era, so eyes turn to one of T.