The name of this prehistoric animal is Stygimoloch Spinifer, meaning "thorny devil from the river of death" (intriguing name). He was a member of the family of the pachycephalosaurs, this means that family was the "dinosaurs thick heads" (translation mine). Finally, the most characteristic of Stygimoloch Spinifer was that, his head. His skull was not as thick as other pachycephalosaurs, very well, but has a large number of horns, horns on his head on the muzzle, on the back of the skull and other parts of the face ... On the horns, the experts still do not agree on whether they were to defend themselves, to show off to fight with others of the same species as do the deer, etc.. From what I think so we will agree (experts and mortals ) is that the horns give it looks fantastic, like the dragons of the films. In fact I think the first who drew dragons, were inspired by this animal ... but hey, back to real dinosaur.
He lived in the Late Cretaceous (70 million years ago) in North America. And disappeared probably because of the large meteorite that caused the Cretaceous mass extinction.