Dracorex a pachycephalosaur dinosaur of North America . An artistic impression, a "dragon-like" REAL dinosaur. Remember the word dinosaur was not invented until 1842 by English paleontologist Richard Owen-- before that these animals were called dragons.
Tyrannosaurus rex was one of the largest meat-eating dinosaurs that ever lived. Everything about this ferocious predator, from its thick, heavy skull to its jaw, was designed for maximum bone-crushing action.