Opinions from H.-D. Sues and P. M. Galton 1987

  • 'Ceratopsia belongs to Marginocephalia'
  • 'Goyocephale belongs to Homalocephalidae'
  • 'Gravitholus belongs to Pachycephalosauridae'
  • 'Gravitholus albertae belongs to Gravitholus'
  • 'Homalocephale belongs to Homalocephalidae'
  • 'Homalocephaleridae is corrected as Homalocephalidae and belongs to Pachycephalosauria'
  • 'Majungatholus belongs to Pachycephalosauridae'
  • 'Ornatotholus belongs to Pachycephalosauridae'
  • 'Pachycephalosauria belongs to Marginocephalia'
  • 'Pachycephalosauridae belongs to Pachycephalosauria'
  • 'Pachycephalosaurus belongs to Pachycephalosauridae'
  • 'Pachycephalosaurus grangeri is a subjective synonym of Pachycephalosaurus wyomingensis'
  • 'Pachycephalosaurus reinheimeri is a subjective synonym of Pachycephalosaurus wyomingensis'
  • 'Stegoceras belongs to Pachycephalosauridae'
  • 'Stegoceras brevis is a subjective synonym of Stegoceras validum'
  • 'Stegoceras browni is recombined as Ornatotholus browni'
  • 'Stegoceras lambei is a subjective synonym of Stegoceras validum'
  • 'Stegoceras validus is corrected as Stegoceras validum and belongs to Stegoceras'
  • 'Stygimoloch belongs to Pachycephalosauridae'
  • 'Stygimoloch spinifer belongs to Stygimoloch'
  • 'Troodon bexelli is a nomen dubium'
  • 'Troodon edmontonensis [misspelled as Stegoceras edmontonense] belongs to Stegoceras'
  • 'Troodon sternbergi is a subjective synonym of Stegoceras validum'
  • 'Troodon wyomingensis is recombined as Pachycephalosaurus wyomingensis'
  • 'Tylosteus is a nomen oblitum' according to D. Baird 1979
  • 'Tylosteus is a nomen oblitum'
  • 'Tylosteus ornatus is a nomen oblitum'
  • 'Tylosteus ornatus is a nomen oblitum' according to D. Baird 1979
  • 'Wannanosaurus belongs to Homalocephalidae'
  • 'Yaverlandia belongs to Pachycephalosauridae'