Tyrannosaurus Rex Although it was a latecomer to the dinosaur scene, Tyrannosaurus rex(tie-RAN-a-sore-us REX) was one of the
world's largest predators. Toward the end of the Cretaceous Period (about 65-70 million years ago),
this ferocious animal roamed western North America in search of Corythosaurus and other
plant-eating dinosaurs.
The name Tyrannosaurus rex comes from the Greek words for "tyrant lizard king."
world's largest predators. Toward the end of the Cretaceous Period (about 65-70 million years ago),
this ferocious animal roamed western North America in search of Corythosaurus and other
plant-eating dinosaurs.