Reptilia - Ornithischia - Pachycephalosauridae
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 D. C. Woodruff et al. 2021
See also Evans et al. 2018, Longrich et al. 2010, Mallon et al. 2015, Maryanska et al. 2004, Schott and Evans 2012, Schott and Evans 2017, Sullivan 2003, Williamson and Carr 2003 and Williamson et al. 2009
Sister taxa: Sphaerotholus edmontonensis, Sphaerotholus goodwini, Sphaerotholus lyonsi, Sphaerotholus triregnum
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
Distribution:
• Cretaceous of Canada (1: Saskatchewan collection), United States (1: Montana)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.