Ceratopsids were the biggest and most fearsome of the ceratopsians, or horned-faced dinosaurs. With their frills and horns being the only real differences between named species, many names may actually represent members of the same species varying by age and/or gender. It is divided into the long-frilled chasmosaurines and the short-frilled centrosaurines, with their pad-nosed pachyrhinosaurins.
Ceratopsids make up most of the Lightning Dinosaurs.
A
- Achelousaurus horneri
- Agathaumas sylvestris (dubious, likely same as Triceratops)
- Agujaceratops mariscalensis
- Albertaceratops nesmoi
- Anchiceratops/A. longirostris/A. ornatus
- Arrhinoceratops/A. brachyops/A. utahensis
- Avaceratops lammersi
B
C
- Centrosaurus/C. apertus/C. brinkmani/C. longirostris
- Ceratops montanus (dubious)
- Chasmosaurus/C. belli/C. russelli
- Coahuilaceratops magnacuerna
D
- Diabloceratops eatoni
- Diceratops hatcheri (now "Nedoceratops", may be Triceratops)
E
- Einiosaurus procurvicornis
- Eotriceratops xerinsularis
- Eucentrosaurus apertus (same as Centrosaurus)
K
M
- Medusaceratops lokii
- Mojoceratops perifania
- Monoclonius crassus (potentially invalid)
O
- Ojoceratops fowleri (maybe same as Triceratops or Eotriceratops)
P
R
S
T
- Tatankaceratops sacrisonorum (may be Triceratops)
- Titanoceratops ouranos
- Torosaurus/T. latus/T. utahensis
- Turanoceratops tardabilis (uncertain if true member)
- Triceratops/T. horridus/T. prorsus