Classification of Dodson and Currie 1990

G. †Notoceratops Tapia 1919 [southern horn face]
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†Notoceratops bonarelli Tapia 1919
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G. †Ceratops Marsh 1888
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Invalid names: Ceratops montanus Marsh 1888 [nomen dubium]
†Dysganus bicarinatus Cope 1876
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†Dysganus encaustus Cope 1876
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†Dysganus haydenianus Cope 1876
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†Dysganus peiganus Cope 1876
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†Monoclonius fissus Cope 1889
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†Triceratops galeus Marsh 1889
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†Triceratops ingens Lull 1915
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†Triceratops maximus Brown 1933
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†Triceratops sulcatus Marsh 1890
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G. †Ugrosaurus CoBabe and Fastovsky 1987
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†Ugrosaurus olsoni CoBabe and Fastovsky 1987
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Subor. †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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G. †Avaceratops Dodson 1986
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†Avaceratops lammersi Dodson 1986
G. †Brachyceratops Gilmore 1914
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G. †Centrosaurus Lambe 1905
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†Centrosaurus apertus Lambe 1905
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Invalid names: Centrosaurus longirostris Sternberg 1940 [synonym], Monoclonius cutleri Brown 1917 [synonym], Monoclonius dawsoni Lambe 1902 [synonym], Monoclonius flexus Brown 1914 [synonym]
G. †Monoclonius Cope 1876
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†Monoclonius crassus Cope 1876
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Invalid names: Monoclonius lowei Sternberg 1940 [synonym]
G. †Pachyrhinosaurus Sternberg 1950
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†Pachyrhinosaurus canadensis Sternberg 1950
G. †Styracosaurus Lambe 1913
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Invalid names: Monoclonius nasicornus Brown 1917 [synonym], Styracosaurus parksi Brown and Schlaikjer 1937 [synonym]
†Styracosaurus ovatus Gilmore 1930
Subfm. †Chasmosaurinae Lambe 1915
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G. †Anchiceratops Brown 1914
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†Anchiceratops ornatus Brown 1914
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Invalid names: Anchiceratops longirostris Sternberg 1926 [synonym]
G. †Arrhinoceratops Parks 1925
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G. †Chasmosaurus Lambe 1914
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†Chasmosaurus belli Lambe 1902
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Invalid names: Chasmosaurus brevirostris Lull 1933 [synonym]
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Invalid names: Chasmosaurus kaiseni Brown 1933 [synonym]
†Chasmosaurus russelli Sternberg 1940
Invalid names: Eoceratops Lambe 1915 [synonym], Protorosaurus Lambe 1914 [synonym]
G. †Pentaceratops Osborn 1923
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Invalid names: Pentaceratops fenestratus Wiman 1930 [synonym]
G. †Torosaurus Marsh 1891
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†Torosaurus latus Marsh 1891
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Invalid names: Arrhinoceratops utahensis Gilmore 1946 [synonym], Torosaurus gladius Marsh 1891 [synonym]
G. †Triceratops Marsh 1889
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†Triceratops horridus Marsh 1889
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Invalid names: Triceratops albertensis Sternberg 1949 [synonym], Triceratops brevicornus Hatcher and Lull 1905 [synonym], Triceratops calicornis Marsh 1898 [synonym], Triceratops elatus Marsh 1891 [synonym], Triceratops eurycephalus Schlaikjer 1935 [synonym], Triceratops flabellatus Marsh 1889 [synonym], Triceratops hatcheri Lull 1905 [synonym], Triceratops obtusus Marsh 1898 [synonym], Triceratops prorsus Marsh 1890 [synonym], Triceratops serratus Marsh 1890 [synonym]
Invalid names: Bison alticornis Marsh 1887 [nomen dubium], Diceratops Hatcher and Lull 1905 [synonym], Sterrholophus Marsh 1891 [synonym]
Invalid names: Agathaumas Cope 1872 [nomen dubium], Polyonax Cope 1874 [nomen dubium]
Fm. †Protoceratopsidae Granger and Gregory 1923
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G. †Bagaceratops Maryanska and Osmólska 1975
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†Bagaceratops rozhdestvenskyi Maryanska and Osmólska 1975
G. †Leptoceratops Brown 1914
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†Leptoceratops gracilis Brown 1914
G. †Microceratops Bohlin 1953
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†Microceratops gobiensis Bohlin 1953
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Invalid names: Microceratops sulcidens Bohlin 1953 [synonym]
G. †Montanoceratops Sternberg 1951
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†Montanoceratops cerorhynchus Brown and Schlaikjer 1942
G. †Protoceratops Granger and Gregory 1923
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†Protoceratops andrewsi Granger and Gregory 1923
†Protoceratops kozlowskii Maryanska and Osmólska 1975
Invalid names: Dysganus Cope 1876 [nomen dubium]