After Sereno, 2000 and You & Dodson, 2003
<==o †Ceratopsia Marsh, 1890 (sarvinaamat; horned dinosaurs) |-- †Psittacosauria Osborn, 1923 `--o †Neoceratopsia Sereno, 1991 [Neoceratopia] |-- †Chaoyangsaurus youngi Zhao, Cheng & Xu, 1999 ["Chaoyangsauridae"] `--+-- †Liaoceratops yanzigouensis Xu, Makovicky, Wang, Norell & You, 2002 `--+-- †Archaeoceratops oshimai Dong & Azuma, 1997 ["Archaeoceratopidae"] `--+--o †"Leptoceratopidae" | |?- †Udanoceratops tschizhovi Kurzanov, 1992 | `-- †Leptoceratops gracilis Brown, 1914c `--o †Coronosauria Sereno, 1986 |--o †Protoceratopidae | |-- †Graciliceratops mongoliensis Sereno, 2000 | |-- †Bagaceratops rozhdestvenskyi Marya´nska & Osmólska, 1975 [Breviceratops kozlowskii (Marya´nska & Osmólska, 1975)] | `-- †Protoceratops andrewsi Granger & Gregory, 1923 `--o †Ceratopsoidea(Marsh, 1890a) Hay, 1902 [Ceratopoidea] |-- †Montanoceratops cerorhynchus (Brown & Schlaikjer, 1942) Sternberg, 1951 [Leptoceratops cerorhynchus Brown & Schlaikjer, 1942] `--o †Ceratopsomorpha (Marsh, 1890a) |-- †Zuniceratops christopheri `--+-- †Turanoceratops tardabilis Nesov, Kaznyshkina & Cherepanov, 1989 `-- †Ceratopsidae Marsh, 1890a [Ceratopidae Marsh, 1890a emend. ??, Agathaumidae Cope]
Ceratopsia incertae sedis:
†Asiaceratops salsopaludalis Nesov, Kaznyshkina & Cherepanov, 1989 [nomia dubia]
†Kulceratops kulensis
†Microceratops Bohlin, 1953 sensu Sereno, 2000 [Nomia dubia]
†M. gobiensis Bohlin, 1953 [Nomia dubia]
†M. sulcidens Bohlin, 1953 [Nomia dubia]
Reference(s):
- Chinnery, B. J., 2004: Description of Prenoceratops pieganensis gen. et sp. nov. (Dinosauria: Neoceratopsia) from the Two Medicine Formation of Montana.
–Journal of Vertebrate Paleontology: Vol. 24, #3, pp. 572-590
Chinnery, B. J. & Weishampel, D. B., 1998: Montanoceratops cerorhynchus (Dinosauria: Ceratopsia) and relationships among basal neoceratopsians.
–Journal of Vertebrate Paleontology: Vol. 18, #3, pp. 369-585
Dopson, P., 1996: The Horned Dinosaurs.
–Princeton University Press, Pinceton, New Jersey, pp. xiv-346
Dopson, P., & Currie, P. J., 1990: Neoceratopsia. 593-618.
in Weishampel, D. B., Dodson, P., & Osmólska, H. (eds.), 1990: The Dinosauria.
–University of California Press, Berkley, Los Angeles, Oxford, 1990 xvi-733
Keesey, T. M., 1996-2000: The Dinosauricon
–iNet: http://dinosauricon.com/
Sereno, P. C., 1990: Psittacosauria. 579-592
in Weishampel, D. B., Dodson, P., & Osmólska, H. (eds.), 1990: The Dinosauria.
–University of California Press, Berkley, Los Angeles, Oxford, 1990 xvi-733
Sereno, P. C., 2000: The fossil record, systematics and evolution of pachycephalosaurs and ceratopsians from Asia. 480-516
in Benton, M. J., Shishkin, M. A., Unvin, D. M. & Kurochkin, E. N., (eds.) 2000: The Age of Dinosaurs in Russia and Mongolia.
–Cambridge University Press, Cambridge, xxxix-696
Sereno, P. C. & Chao, S., 1988: Psittacosaurus xinjiangensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of Northwestern China.
–Journal of Vertebrate Paleontology: Vol. 8, #4, pp. 353-365
You, H.-l., 2000: A new phylogeny of basal Neocetopsia.
–Journal of Vertebrate Paleontology: Vol. 20, #3, suppl. to #3, 80A
You, H.-l. & Dodson, P., 2003: Redescription of neoceratopsian dinosaur Archaeoceratops and early evolution of Neoceratopsia.
–Acta Palaeontologica Polonica: Vol. 48, #2, pp. 261-272
Zhao, X., Cheng, Z., & Xu, X., 1999: The earliest ceratopsian from the Tuchengzi Formation of Liaoning, China.
–Journal of Vertebrate Paleontology: Vol. 19, #4, pp. 681-691
Xu, X., Makovicky, P. J., Wang, X.-l., Norell, M. A. & You, H.-l., 2002: A ceratopsian dinosaur from China and the early evolution of Ceratopsia.
–Nature: Vol. 416, pp. 314-317