Classification of Makovicky et al. 2004
†Ornithomimus tenuis Marsh 1890
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†Elaphrosaurus gautieri Lapparent 1960
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G. †Elaphrosaurus Janensch 1920
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Invalid names: Elaphrosaurus iguidiensis Lapparent 1957 [nomen dubium]
Unr. Maniraptoriformes Holtz, Jr. and Padian 1995
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Infraor. †Ornithomimosauria Barsbold 1976 [ornithomimosaur]
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Fm. †Ornithomimidae Marsh 1890 [ornithomimid]
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G. †Ornithomimus Marsh 1890
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†Ornithomimus edmontonicus Sternberg 1933
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Invalid names: Struthiomimus brevitertius Parks 1926 [synonym], Struthiomimus currellii Parks 1933 [synonym], Struthiomimus ingens Parks 1933 [synonym], Struthiomimus samueli Parks 1928 [synonym]
†Ornithomimus velox Marsh 1890
Invalid names: Dromiceiomimus Russell 1972 [synonym], Ornithomimus sedens Marsh 1892 [nomen dubium]
Invalid names: Coelosaurus Leidy 1865 [nomen dubium], Timimus Rich and Vickers-Rich 1994 [nomen dubium]