• Ceratopsidae
  • Avaceratops lammersi [i. s.]
  • Centrosaurinae
    • Centrosaurini
      • Centrosaurus apertus
      • Styracosaurus albertensis*
      • Styracosaurus ovatus
    • Pachyrhinosaurini
      • Brachyceratops montanensis
      • ---
        • Einiosaurus procurvicornis
        • ---
          • Achelousaurus horneri
          • Pachyrhinosaurus canadensis
  • Ceratopsinae
    • Chasmosaurini
      • Chasmosaurus belli*
      • Chasmosaurus canadensis
      • Chasmosaurus mariscalensis
      • Chasmosaurus russelli
      • Pentaceratops sternbergi
    • ---
      • Anchiceratops ornatus
      • ---
        • Arrhinoceratops brachyops
        • ---
          • Torosaurus latus
          • ---
            • Diceratops hatcheri
            • Triceratops horridus*
            • Triceratops ingens
            • Triceratops prorsus

---


Revised: January 25, 1999; New: January 1, 1996