Classification of Ryan and Evans 2005
Fm. †Hypsilophodontidae Dollo 1882 [hypsilophodontid]
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Fm. †Hadrosauridae Cope 1869 [hadrosaurid]
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Subfm. †Hadrosaurinae Lambe 1918 [hadrosaurine]
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G. †Gryposaurus Lambe 1914
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†Gryposaurus incurvimanus Parks 1919
†Gryposaurus notabilis Lambe 1914
Subfm. †Lambeosaurinae Parks 1923 [lambeosaurine]
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G. †Corythosaurus Brown 1914
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†Corythosaurus casuarius Brown 1914
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Invalid names: Corythosaurus bicristatus Parks 1935 [synonym], Corythosaurus brevicristatus Parks 1935 [synonym], Corythosaurus excavatus Gilmore 1923 [synonym], Corythosaurus intermedius Parks 1923 [synonym], Tetragonosaurus erectofrons Parks 1931 [synonym]
G. †Lambeosaurus Parks 1923
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†Lambeosaurus lambei Parks 1923
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Invalid names: Corythosaurus frontalis Parks 1935 [synonym], Lambeosaurus clavinitialis Sternberg 1935 [synonym], Tetragonosaurus cranibrevis Sternberg 1935 [synonym], Tetragonosaurus praeceps Parks 1931 [synonym]
†Lambeosaurus magnicristatus Sternberg 1935
Fm. †Pachycephalosauridae Sternberg 1945
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G. †Stegoceras Lambe 1902
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†Stegoceras breve Lambe 1918
†Stegoceras sternbergi Brown and Schlaikjer 1943
†Stegoceras validum Lambe 1902
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Invalid names: Ornatotholus browni Wall and Galton 1979 [synonym]
Invalid names: Hansuessia Sullivan 2003 [synonym], Ornatotholus Galton and Sues 1983 [synonym]
Subor. †Ankylosauria Osborn 1923 [ankylosaur]
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Fm. †Ankylosauridae Brown 1908 [ankylosaurid]
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G. †Euoplocephalus Lambe 1910
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†Euoplocephalus tutus Lambe 1902
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Invalid names: Anodontosaurus lambei Sternberg 1929 [synonym], Dyoplosaurus acutosquameus Parks 1924 [synonym], Palaeoscincus asper Lambe 1902 [synonym], Scolosaurus cutleri Nopcsa 1928 [synonym]
Invalid names: Anodontosaurus Sternberg 1929 [synonym], Dyoplosaurus Parks 1924 [synonym], Scolosaurus Nopcsa 1928 [synonym]
Fm. †Nodosauridae Marsh 1890
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G. †Edmontonia Sternberg 1928
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†Edmontonia rugosidens Gilmore 1930
Invalid names: Chassternbergia Bakker 1988 [synonym]
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. †Centrosaurus Lambe 1905
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†Centrosaurus apertus Lambe 1905
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Invalid names: Centrosaurus longirostris Sternberg 1940 [synonym], Centrosaurus nasicornus Brown 1917 [synonym], Monoclonius cutleri Brown 1917 [synonym], Monoclonius dawsoni Lambe 1902 [synonym], Monoclonius flexus Brown 1914 [synonym]
G. †Styracosaurus Lambe 1913
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†Styracosaurus albertensis Lambe 1913
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Invalid names: Styracosaurus parksi Brown and Schlaikjer 1937 [synonym]
Subfm. †Chasmosaurinae Lambe 1915
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G. †Chasmosaurus Lambe 1914
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†Chasmosaurus irvinensis Holmes et al. 2001
†Chasmosaurus russelli Sternberg 1940