Opinions from P. J. Makovicky 2001

  • 'Archaeoceratops belongs to Neoceratopsia'
  • 'Archaeoceratops oshimai belongs to Archaeoceratops'
  • 'Asiaceratops belongs to Leptoceratopsidae'
  • 'Asiaceratops salsopaludalis belongs to Asiaceratops'
  • 'Bagaceratops belongs to Protoceratopsidae'
  • 'Bagaceratops rozhdestvenskyi belongs to Bagaceratops'
  • 'Centrosaurus belongs to Ceratopsidae'
  • 'Centrosaurus apertus belongs to Centrosaurus'
  • 'Ceratops horridus is recombined as Triceratops horridus'
  • 'Ceratopsoidea belongs to Coronosauria'
  • 'Chaoyangsaurus belongs to Ceratopsia'
  • 'Chaoyangsaurus youngi belongs to Chaoyangsaurus'
  • 'Coronosauria belongs to Neoceratopsia'
  • 'Leptoceratops belongs to Leptoceratopsidae'
  • 'Leptoceratops cerorhynchus is recombined as Montanoceratops cerorhynchus'
  • 'Leptoceratops gracilis belongs to Leptoceratops'
  • 'Leptoceratopsinae was reranked as the family Leptoceratopsidae and belongs to Neoceratopsia'
  • 'Microceratops belongs to Neoceratopsia'
  • 'Microceratops gobiensis belongs to Microceratops'
  • 'Montanoceratops belongs to Leptoceratopsidae'
  • 'Neoceratopsia belongs to Ceratopsia'
  • 'Protoceratops belongs to Protoceratopsidae'
  • 'Protoceratops andrewsi belongs to Protoceratops'
  • 'Protoceratopsidae belongs to Coronosauria'
  • 'Psittacosaurus belongs to Ceratopsia'
  • 'Psittacosaurus mongoliensis belongs to Psittacosaurus'
  • 'Triceratops belongs to Ceratopsidae'
  • 'Udanoceratops belongs to Leptoceratopsidae'
  • 'Udanoceratops tschizhovi belongs to Udanoceratops'
  • 'Zuniceratops belongs to Ceratopsoidea'
  • 'Zuniceratops christopheri belongs to Zuniceratops'