Classification of Godefroit et al. 1998
Or. †Ornithischia Seeley 1888 [ornithischian]
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G. †Probactrosaurus Rozhdestvensky 1966
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†Probactrosaurus gobiensis Rozhdestvensky 1966
Unr. †Ankylopollexia Sereno 1986
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Superfm. †Hadrosauroidea Huene 1954
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G. †Bactrosaurus Gilmore 1933
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†Bactrosaurus johnsoni Gilmore 1933
†Bactrosaurus prynadai Riabinin 1937
G. †Claosaurus Marsh 1890
Fm. †Hadrosauridae Cope 1869 [hadrosaurid]
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Subfm. †Hadrosaurinae Lambe 1918 [hadrosaurine]
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G. †Anatotitan Brett-Surman 1990
G. †Aralosaurus Rozhdestvensky 1968
G. †Edmontosaurus Lambe 1917
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†Edmontosaurus annectens Marsh 1892
†Edmontosaurus regalis Lambe 1917
†Edmontosaurus saskatchewanensis Sternberg 1926
G. †Hadrosaurus Leidy 1858
G. †Lophorhothon Langston 1960
G. †Saurolophus Brown 1912
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†Saurolophus angustirostris Rozhdestvensky 1952
†Saurolophus osborni Brown 1912
Subfm. †Lambeosaurinae Parks 1923 [lambeosaurine]
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G. †Parasaurolophus Parks 1922
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†Parasaurolophus cyrtocristatus Ostrom 1961
†Parasaurolophus walkeri Parks 1922
G. †Mandschurosaurus Riabinin 1930
G. †Secernosaurus Brett-Surman 1979
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
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G. †Iguanodon Mantell 1825
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†Iguanodon atherfieldensis Hooley 1925
†Iguanodon bernissartensis Boulenger 1881
†Iguanodon lakotaensis Weishampel and Bjork 1989