Classification of Ryan et al. 2012

Subfm. †Chasmosaurinae Lambe 1915
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G. †Vagaceratops Sampson 2010
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†Vagaceratops irvinensis Holmes et al. 2001
Subfm. †Lambeosaurinae Parks 1923 [lambeosaurine]
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G. †Corythosaurus Brown 1914
G. †Lambeosaurus Parks 1923
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†Lambeosaurus magnicristatus Sternberg 1935
Subfm. †Centrosaurinae Lambe 1915
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G. †Centrosaurus Lambe 1905
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†Centrosaurus apertus Lambe 1905
G. †Styracosaurus Lambe 1913
Fm. †Leptoceratopsidae Nopcsa 1923 [leptoceratopsid]
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G. †Asiaceratops Nessov et al. 1989
G. †Cerasinops Chinnery and Horner 2007
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†Cerasinops hogkissi Chinnery and Horner 2007
G. †Gryphoceratops Ryan et al. 2012
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†Gryphoceratops morrisoni Ryan et al. 2012
G. †Leptoceratops Brown 1914
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†Leptoceratops gracilis Brown 1914
G. †Montanoceratops Sternberg 1951
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†Montanoceratops cerorhynchus Brown and Schlaikjer 1942
G. †Prenoceratops Chinnery 2004
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†Prenoceratops pieganensis Chinnery 2004
G. †Udanoceratops Kurzanov 1992
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†Udanoceratops tschizhovi Kurzanov 1992
G. †Unescoceratops Ryan et al. 2012
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†Unescoceratops koppelhusae Ryan et al. 2012
G. †Zhuchengceratops Xu et al. 2010
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†Zhuchengceratops inexpectus Xu et al. 2010