Classification of Ryan et al. 2017

Unr. †Ornithischia Seeley 1888 [ornithischian]
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Unr. †Ceratopsia Marsh 1890 [ceratopsian]
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Infraor. †Neoceratopsia Sereno 1986
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Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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Subfm. †Centrosaurinae Lambe 1915
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Unr. †Centrosaurini Ryan et al. 2017
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G. †Centrosaurus Lambe 1905
G. †Coronosaurus Ryan et al. 2012
G. †Rubeosaurus McDonald and Horner 2010
G. †Spinops Farke et al. 2011
G. †Styracosaurus Lambe 1913
G. †Diabloceratops Kirkland and Deblieux 2010
Unr. †Nasutoceratopsini Ryan et al. 2017
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G. †Avaceratops Dodson 1986
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†Avaceratops lammersi Dodson 1986
G. †Nasutoceratops Sampson et al. 2013
Unr. †Pachyrhinosaurini Fiorillo and Tykoski 2012
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G. †Achelousaurus Sampson 1994
G. †Einiosaurus Sampson 1994
G. †Pachyrhinosaurus Sternberg 1950
G. †Sinoceratops Xu et al. 2010
G. †Wendiceratops Evans and Ryan 2015
G. †Xenoceratops Ryan et al. 2012