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Sphaerotholus buchholtzae Williamson and Carr 2003 (ornithischian)

Reptilia - Neornithischia - Pachycephalosauridae

PaleoDB taxon number: 67683

Full reference: 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

Belongs to Sphaerotholus according to N. R. Longrich et al. 2010

Sister taxa: Prenocephale prenes, Sphaerotholus edmontonense, Sphaerotholus brevis, Sphaerotholus goodwini

Type specimen: RTMP 87.113.3. Its type locality is western Carter County, which is in a Maastrichtian terrestrial horizon in the Hell Creek Formation of Montana.

Ecology: ground dwelling herbivore