A new genus of derived pachycephalosaurian from western North America

Citation

Williamson, T. E.; Carr, T. D. (2003). A new genus of derived pachycephalosaurian from western North America. Journal of Vertebrate Paleontology 22(4): 779-801. Informa UK Limited. doi:10.1671/0272-4634(2002)022[0779:angodp]2.0.co;2

Names first published here

• Sphaerotholus genus
• Sphaerotholus goodwini species
• Sphaerotholus buchholtzae species

Cited by genera

• Sphaerotholus

  Erects the genus Sphaerotholus with type species S. goodwini and the second species S. buchholtzae.

Cited by clades

• Pachycephalosaurinae

  Recovered Pachycephalosaurinae under Sereno's definition, with node synapomorphies shown in its cladogram.