Fossils of Tyrannosaurus rex have been found in North American rock formations dating to the last three million years of the Cretaceous Period at the end of the Maastrichtian stage, approximately 68.5 to 65.5 million years ago.
Tyrannosaurus Rex Habitat
Tyrannosaurus Rex Fossil
Giant Tyrannosaurus Rex
Tyrannosaurus Rex Head
Tyrannosaurus Rex Extinct Animals Species