Classification of Hatcher et al. 1907

Or. Theropoda Marsh 1881 [theropod]
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G. †Manospondylus Cope 1892
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Manospondylus gigas Cope 1892
Fm. †Stegosauridae Marsh 1880
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Invalid names: Dysganus peiganus Cope 1876 [nomen nudum]
G. †Centrosaurus Lambe 1905
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Centrosaurus apertus Lambe 1905
Or. Dinosauria Owen 1842 [dinosaur]
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Or. †Predentata Marsh 1894
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Subor. †Ceratopsia Marsh 1890 [ceratopsian]
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Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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G. †Agathaumas Cope 1872
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Agathaumas sylvestris Cope 1872
Invalid names: Agathaumas milo Cope 1874 [nomen nudum]
G. †Ceratops Marsh 1888
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Ceratops belli Lambe 1902
Ceratops canadensis Lambe 1902
Ceratops montanus Marsh 1888
Ceratops paucidens Marsh 1889
G. †Diceratops Hatcher and Lull 1905
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Diceratops hatcheri Lull 1905
G. †Monoclonius Cope 1876
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Monoclonius crassus Cope 1876
Monoclonius dawsoni Lambe 1902
G. †Stegoceras Lambe 1902
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Stegoceras validus Lambe 1902
G. †Torosaurus Marsh 1891
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Torosaurus gladius Marsh 1891
Torosaurus latus Marsh 1891
G. †Triceratops Marsh 1889
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Triceratops alticornis Marsh 1887
Triceratops brevicornus Hatcher and Lull 1905
Triceratops calicornis Marsh 1898
Triceratops elatus Marsh 1891
Triceratops horridus Marsh 1889
Triceratops obtusus Marsh 1898
Triceratops prorsus Marsh 1890
Triceratops serratus Marsh 1890
Triceratops sulcatus Marsh 1890
Invalid names: Sterrholophus Marsh 1891 [synonym]
Invalid names: Agathaumidae Cope 1889 [synonym], Monoclonius fissus Cope 1889 [nomen nudum], Polyonax Cope 1874 [nomen dubium]
Fm. †Trachodontidae Lydekker 1888
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G. †Claorhynchus Cope 1892
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Subor. †Ornithischia Seeley 1888 [ornithischian]
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Invalid names: Dysganus Cope 1876 [nomen nudum]