Two new species of small-bodied pachycephalosaurine (Dinosauria, Marginocephalia) from the uppermost Cretaceous of North America suggest hidden diversity in well-sampled formations

Citation

Woodruff, D. C.; Schott, R. K.; Evans, D. C. (2023). Two new species of small-bodied pachycephalosaurine (Dinosauria, Marginocephalia) from the uppermost Cretaceous of North America suggest hidden diversity in well-sampled formations. Papers in Palaeontology 9(6): e1535. Wiley. doi:10.1002/spp2.1535

Names first published here

• Sphaerotholus lyonsi species
• Sphaerotholus triregnum species

Cited by genera

• Sphaerotholus

  Erects S. lyonsi and S. triregnum and revises the genus.