Classification of Galton 1971

Subor. †Ornithopoda Marsh 1881 [ornithopod]
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Fm. †Pachycephalosauridae Sternberg 1945
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G. †Yaverlandia Galton 1971
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Yaverlandia bitholus Galton 1971
G. †Hypsilophodon Huxley 1870
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Hypsilophodon foxii Huxley 1870
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
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G. †Vectisaurus Hulke 1879
G. †Pachycephalosaurus Brown and Schlaikjer 1943
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Pachycephalosaurus grangeri Brown and Schlaikjer 1943
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Invalid names: Pachycephalosaurus reinheimeri Brown and Schlaikjer 1943 [synonym], Pachycephalosaurus wyomingensis Gilmore 1931 [synonym]
G. †Stegoceras Lambe 1902
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Stegoceras edmontonensis Brown and Schlaikjer 1943
Stegoceras validus Lambe 1902