Reptilia Laurenti, 1768
Alaskacephale
Colepiocephale Sullivan, 2003
Dracorex Bakker, Sullivan, Porter, Larson & Saulsbury, 2006
Gravitholus Wall & Galton, 1979
Hanssuesia Sullivan, 2003
Majungatholus Sues & Taquet, 1979
Ornatotholus Galton & Sues, 1983
Pachycephalosaurus Brown & Schlaikjer, 1943
Prenocephale Maryanska & Osmolska, 1974
Sphaerotholus Williamson & Carr, 2003
Stegoceras Lambe, 1902
Stygimoloch Gallon & Sues, 1983
Tylocephale Maryanska & Osmolska, 1974
Tylosteus Leidy, 1872
Yaverlandia Galton, 1971
