Sphaerotholus was a herbivore. It lived in the Cretaceous period and inhabited North America. Its fossils have been found in places such as New Mexico, Montana and Alberta (Canada).

All these Sphaerotholus pictures were collected from the internet. Enjoy and explore:

Sphaerotholus was described by the following scientific paper(s):
  • T. D. Carr and T. E. Williamson. 2000. A review of Tyrannosauridae (Dinosauria, Coelurosauria) from New Mexico. In S. G. Lucas and A. B. Heckert (eds.), Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 17:113-145
  • T. E. Williamson and T. D. Carr. 2003. A new genus of derived pachycephalosaurian from western North America. Journal of Vertebrate Paleontology 22(4):779-801
  • E. B. Giffin. 1989. Notes on pachycephalosaurs (Ornithischia). Journal of Paleontology 63(4):525-529