After Forster, 1996
†Triceratops Marsh, 1889b †Bison †Diceratops †Triceratops prorsus Marsh, 1890 †Triceratops horridus †Triceratops brevicornus] †Triceratops horridus Marsh, 1889a †Triceratops flabellatus †Triceratops serratus †Triceratops elatus †Triceratops calicornis †Triceratops obtusus]
Reference(s):
- Forster, C. A., 1996: Species resolution in Triceratops: Cladistic and morphometric approaches.
–Journal of Vertebrate Paleontology: Vol. 16, #2, pp. 259-270