Classification of Lehman 2010

G. †Gravitholus Wall and Galton 1979
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†Gravitholus albertae Wall and Galton 1979
G. †Pachycephalosaurus Brown and Schlaikjer 1943
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G. †Stegoceras Lambe 1902
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†Stegoceras lambei Sternberg 1945
†Stegoceras validum Lambe 1902
G. †Stygimoloch Galton and Sues 1983
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†Stygimoloch spinifer Galton and Sues 1983
G. †Prenocephale Maryańska and Osmólska 1974
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†Prenocephale brevis Lambe 1918