Order †Pachycephalosauria Maryañska & Osmólska, 1974
see Infraorder Pachycephalosauria Maryañska & Osmólska, 1974
Family †Pachycephalosauridae Sternberg, 1945
Genus †Prenocephale Maryañska & Osmólska, 1974
1 †Prenocephale brevis (Lambe, 1918b) R.M. Sullivan, 2000
2 †Prenocephale edmontonensis (Brown & Schlaikjer, 1943) R.M. Sullivan, 2000
3 †Prenocephale goodwini (T.E. Williamson & T.D. Carr, 2002) R.M. Sullivan, 2003
4 †Prenocephale prenes T. Maryañska & H. Osmólska, 1974