Opinions from R. S. Lull 1933

  • 'Anchiceratops belongs to Ceratopsidae'
  • 'Anchiceratops longirostris belongs to Anchiceratops'
  • 'Anchiceratops ornatus belongs to Anchiceratops'
  • 'Arrhinoceratops belongs to Ceratopsidae'
  • 'Arrhinoceratops brachyops belongs to Arrhinoceratops'
  • 'Bison alticornis is a nomen dubium'
  • 'Brachyceratops belongs to Ceratopsidae'
  • 'Brachyceratops montanensis belongs to Brachyceratops'
  • 'Centrosaurus belongs to Ceratopsidae'
  • 'Centrosaurus apertus belongs to Centrosaurus'
  • 'Ceratops belongs to Ceratopsidae'
  • 'Ceratops montanus belongs to Ceratops'
  • 'Ceratopsia belongs to Ornithischia'
  • 'Chasmosaurus belongs to Ceratopsidae'
  • 'Chasmosaurus brevirostris belongs to Chasmosaurus'
  • 'Chasmosaurus kaiseni belongs to Chasmosaurus'
  • 'Diceratops hatcheri is recombined as Triceratops hatcheri'
  • 'Eoceratops belongs to Ceratopsidae'
  • 'Leptoceratops belongs to Protoceratopsidae'
  • 'Leptoceratops gracilis belongs to Leptoceratops'
  • 'Monoclonius belongs to Ceratopsidae'
  • 'Monoclonius canadensis is recombined as Eoceratops canadensis'
  • 'Monoclonius crassus belongs to Monoclonius'
  • 'Monoclonius cutleri is recombined as Centrosaurus cutleri'
  • 'Monoclonius dawsoni belongs to Monoclonius'
  • 'Monoclonius flexus is recombined as Centrosaurus flexus'
  • 'Monoclonius nasicornus is recombined as Centrosaurus nasicornus'
  • 'Monoclonius recurvicornis belongs to Monoclonius'
  • 'Monoclonius sphenocerus belongs to Monoclonius'
  • 'Notoceratops bonarelli belongs to Notoceratops'
  • 'Pentaceratops belongs to Ceratopsidae'
  • 'Pentaceratops fenestratus belongs to Pentaceratops'
  • 'Pentaceratops sternbergii belongs to Pentaceratops'
  • 'Protoceratops belongs to Protoceratopsidae'
  • 'Protoceratops andrewsi belongs to Protoceratops'
  • 'Protoceratopsidae belongs to Ceratopsia'
  • 'Styracosaurus belongs to Ceratopsidae'
  • 'Styracosaurus albertensis belongs to Styracosaurus'
  • 'Styracosaurus ovatus belongs to Styracosaurus'
  • 'Tetrapodosaurus belongs to Ceratopsia'
  • 'Tetrapodosaurus borealis belongs to Tetrapodosaurus'
  • 'Torosaurus belongs to Ceratopsidae'
  • 'Torosaurus gladius belongs to Torosaurus'
  • 'Torosaurus latus belongs to Torosaurus'
  • 'Triceratops belongs to Ceratopsidae'
  • 'Triceratops brevicornus belongs to Triceratops'
  • 'Triceratops calicornis belongs to Triceratops'
  • 'Triceratops elatus belongs to Triceratops'
  • 'Triceratops flabellatus belongs to Triceratops'
  • 'Triceratops galeus is a nomen dubium'
  • 'Triceratops maximus is a nomen dubium'
  • 'Triceratops obtusus belongs to Triceratops'
  • 'Triceratops prorsus belongs to Triceratops'
  • 'Triceratops serratus belongs to Triceratops'
  • 'Triceratops sulcatus is a nomen dubium'