Opinions from D. C. Woodruff et al. 2021

  • 'Acrotholus belongs to Pachycephalosaurinae'
  • 'Alaskacephale belongs to Pachycephalosaurinae'
  • 'Alaskacephale gangloffi belongs to Alaskacephale'
  • 'Amtocephale belongs to Pachycephalosaurinae'
  • 'Amtocephale gobiensis belongs to Amtocephale'
  • 'Colepiocephale belongs to Pachycephalosauridae'
  • 'Dracorex belongs to Pachycephalosaurini'
  • 'Dracorex hogwartsia [misspelled as Dracorex hogswartsia] belongs to Dracorex'
  • 'Foraminacephale belongs to Pachycephalosaurinae'
  • 'Goyocephale belongs to Pachycephalosaurinae'
  • 'Goyocephale lattimorei belongs to Goyocephale'
  • 'Hanssuesia belongs to Pachycephalosauridae'
  • 'Homalocephale belongs to Pachycephalosaurinae'
  • 'Homalocephale calathocercos belongs to Homalocephale'
  • 'Pachycephalosauridae belongs to Pachycephalosauria'
  • 'Pachycephalosaurinae belongs to Pachycephalosauridae'
  • 'Pachycephalosaurini belongs to Pachycephalosaurinae'
  • 'Pachycephalosaurus belongs to Pachycephalosaurini'
  • 'Prenocephale belongs to Pachycephalosaurinae'
  • 'Prenocephale prenes belongs to Prenocephale'
  • 'Sphaerotholus belongs to Pachycephalosaurinae'
  • 'Sphaerotholus buchholtzae belongs to Sphaerotholus'
  • 'Sphaerotholus goodwini belongs to Sphaerotholus'
  • 'Stegoceras belongs to Pachycephalosauridae'
  • 'Stegoceras brevis is recombined as Foraminacephale brevis'
  • 'Stegoceras lambei is recombined as Colepiocephale lambei'
  • 'Stegoceras novomexicanum belongs to Stegoceras'
  • 'Stegoceras validus is corrected as Stegoceras validum and belongs to Stegoceras'
  • 'Stygimoloch belongs to Pachycephalosaurini'
  • 'Stygimoloch spinifer belongs to Stygimoloch'
  • 'Troodon edmontonensis is recombined as Sphaerotholus edmontonensis'
  • 'Troodon sternbergi is recombined as Hanssuesia sternbergi'
  • 'Troodon wyomingensis is recombined as Pachycephalosaurus wyomingensis'
  • 'Tylocephale belongs to Pachycephalosaurinae'
  • 'Wannanosaurus belongs to Pachycephalosauria'