Classification:
Domain: Eucarya
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Genasauria
Suborder: Cerapoda
Family: Pachycephalosauria
Genus: Pachycephalosauridae
Species: Stygimoloch
A bipedal herbivorous dinosaur, its arms were much smaller than its hind legs... much smaller. Its name means ‘thorny devil’, describing the mass of thorns (spikes, horns, bony protrusions, whatever...) from its head. These were most likely for show and not as weapons or for defense (speed probably was used for that). Stygimoloch lived in herds, living and grazing in woodland areas in North America during the late Cretaceous.