Opinions from S. C. R. Maidment and P. M. Barrett 2011

  • 'Agujaceratops belongs to Chasmosaurinae'
  • 'Archaeoceratops oshimai belongs to Archaeoceratops'
  • 'Centrosaurus belongs to Centrosaurinae'
  • 'Centrosaurus apertus belongs to Centrosaurus'
  • 'Chasmosaurinae belongs to Ceratopsidae'
  • 'Chasmosaurus belongs to Chasmosaurinae'
  • 'Chasmosaurus brevirostris is a subjective synonym of Chasmosaurus belli'
  • 'Chasmosaurus irvinensis is recombined as Vagaceratops irvinensis'
  • 'Chasmosaurus kaiseni is a subjective synonym of Chasmosaurus belli'
  • 'Chasmosaurus mariscalensis is recombined as Agujaceratops mariscalensis'
  • 'Chasmosaurus russelli belongs to Chasmosaurus'
  • 'Coahuilaceratops belongs to Chasmosaurinae'
  • 'Coahuilaceratops magnacuerna belongs to Coahuilaceratops'
  • 'Kosmoceratops belongs to Chasmosaurinae'
  • 'Kosmoceratops richardsoni belongs to Kosmoceratops'
  • 'Leptoceratops gracilis belongs to Leptoceratops'
  • 'Medusaceratops belongs to Chasmosaurinae'
  • 'Medusaceratops lokii belongs to Medusaceratops'
  • 'Mojoceratops is a subjective synonym of Chasmosaurus'
  • 'Mojoceratops perifania is a subjective synonym of Chasmosaurus russelli'
  • 'Monoclonius belli is recombined as Chasmosaurus belli'
  • 'Monoclonius canadensis is a subjective synonym of Chasmosaurus belli'
  • 'Ojoceratops belongs to Chasmosaurinae'
  • 'Ojoceratops fowleri belongs to Ojoceratops'
  • 'Protoceratops andrewsi belongs to Protoceratops'
  • 'Psittacosaurus sinensis belongs to Psittacosaurus'
  • 'Styracosaurus belongs to Centrosaurinae'
  • 'Styracosaurus albertensis belongs to Styracosaurus'
  • 'Tatankaceratops belongs to Chasmosaurinae'
  • 'Tatankaceratops sacrisonorum belongs to Tatankaceratops'
  • 'Titanoceratops belongs to Chasmosaurinae'
  • 'Titanoceratops ouranos belongs to Titanoceratops'
  • 'Triceratops belongs to Chasmosaurinae'
  • 'Triceratops prorsus belongs to Triceratops'
  • 'Utahceratops belongs to Chasmosaurinae'
  • 'Utahceratops gettyi belongs to Utahceratops'
  • 'Vagaceratops belongs to Chasmosaurinae'
  • 'Yinlong downsi belongs to Yinlong'