Classification of Morschhauser et al. 2019
Unr. †Ceratopsia Marsh 1890 [ceratopsian]
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Infraor. †Neoceratopsia Sereno 1986
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G. †Aquilops Farke et al. 2014
G. †Archaeoceratops Dong and Azuma 1997
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†Archaeoceratops oshimai Dong and Azuma 1997
†Archaeoceratops yujingziensis You et al. 2010
Fm. †Chaoyangsauridae Zhao 1983
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G. †Chaoyangsaurus Zhao et al. 1999
G. †Xuanhuaceratops Zhao et al. 2006
G. †Yinlong Xu et al. 2006
Unr. †Coronosauria Sereno 1986
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Superfm. †Ceratopsoidea Hay 1902
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Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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Subfm. †Centrosaurinae Lambe 1915
Subfm. †Chasmosaurinae Lambe 1915
G. †Zuniceratops Wolfe and Kirkland 1998
Fm. †Leptoceratopsidae Nopcsa 1923 [leptoceratopsid]
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G. †Cerasinops Chinnery and Horner 2007
G. †Gryphoceratops Ryan et al. 2012
G. †Koreaceratops Lee et al. 2010
G. †Montanoceratops Sternberg 1951
G. †Prenoceratops Chinnery 2004
G. †Udanoceratops Kurzanov 1992
G. †Unescoceratops Ryan et al. 2012
G. †Zhuchengceratops Xu et al. 2010
Fm. †Protoceratopsidae Granger and Gregory 1923
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G. †Bagaceratops Maryanska and Osmólska 1975
G. †Protoceratops Granger and Gregory 1923
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†Protoceratops andrewsi Granger and Gregory 1923
†Protoceratops hellenikorhinus Lambert et al. 2001
G. †Graciliceratops Sereno 2000
G. †Liaoceratops Xu et al. 2002
G. †Yamaceratops Makovicky and Norell 2006
G. †Psittacosaurus Osborn 1923
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†Psittacosaurus mongoliensis Osborn 1923
†Psittacosaurus sinensis Young 1958