Classification of the suborder Ptilodontoidea
Superfm. †Ptilodontoidea Sloan and Van Valen 1965
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Fm. †Cimolodontidae Marsh 1889
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G. †Cimolodon Marsh 1889
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†Cimolodon akersteni Weaver et al. 2019
†Cimolodon electus Fox 1971
†Cimolodon nitidus Marsh 1889
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Invalid names: Allacodon rarus Marsh 1892 [synonym], Halodon serratus Marsh 1889 [synonym], Nanomys minutus Marsh 1889 [synonym]
†Cimolodon parvus Marsh 1892
†Cimolodon peregrinus Donohue et al. 2013
†Cimolodon similis Fox 1971
†Cimolodon wardi Eaton 2006
Invalid names: Nanomys Marsh 1889 [synonym]
G. †Neoliotomus Jepsen 1930
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†Neoliotomus conventus Jepsen 1930
†Neoliotomus ultimus Granger and Simpson 1928
Fm. †Neoplagiaulacidae Ameghino 1890
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G. †Cernaysia Vianey-Liaud 1986
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†Cernaysia davidi Vianey-Liaud 1986
†Cernaysia manueli Vianey-Liaud 1986
G. †Ectypodus Matthew and Granger 1921
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†Ectypodus aphronorus Sloan 1987
†Ectypodus arctos Beard and Dawson 2014
†Ectypodus childei Kühne 1969
†Ectypodus laytoni Jepsen 1940
†Ectypodus lovei Sloan 1966
†Ectypodus musculus Matthew and Granger 1921
†Ectypodus powelli Jepsen 1940
†Ectypodus riansensis Marandat et al. 2012
†Ectypodus simpsoni Jepsen 1930
†Ectypodus szalayi Sloan 1981
†Ectypodus tardus Jepsen 1940
Invalid names: Charlesmooria Kühne 1969 [synonym]
G. †Mesodma Jepsen 1940
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†Mesodma ambigua Jepsen 1940
†Mesodma formosa Marsh 1889
†Mesodma hensleighi Lillegraven 1969
†Mesodma pygmaea Sloan 1987
†Mesodma senecta Fox 1971
G. †Mesodmops Tong and Wang 1994
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†Mesodmops dawsonae Tong and Wang 1994
†Mesodmops tenuis Missiaen and Smith 2008
G. †Mimetodon Jepsen 1940
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†Mimetodon churchilli Jepsen 1940
†Mimetodon krausei Sloan 1981
†Mimetodon silberlingi Simpson 1935
G. †Neoplagiaulax Lemoine 1882
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†Neoplagiaulax burgessi Archibald 1982
†Neoplagiaulax donaldorum Scott and Krause 2006
†Neoplagiaulax grangeri Simpson 1935
†Neoplagiaulax hazeni Jepsen 1940
†Neoplagiaulax hunteri Simpson 1936
†Neoplagiaulax jepi Sloan 1987
†Neoplagiaulax kremnus Johnston and Fox 1984
†Neoplagiaulax macintyrei Sloan 1981
†Neoplagiaulax macrotomeus Wilson 1956
†Neoplagiaulax mckennai Sloan 1987
†Neoplagiaulax molestus Cope 1886
†Neoplagiaulax nanophus Holtzman 1978
†Neoplagiaulax paskapooensis Scott 2005
†Neoplagiaulax serrator Scott 2005
Invalid names: Neoplagiaulax nelsoni Sloan 1987 [nomen nudum]
G. †Parectypodus Jepsen 1930
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†Parectypodus armstrongi Johnston and Fox 1984
†Parectypodus corystes Scott 2003
†Parectypodus foxi Storer 1991
†Parectypodus lunatus Krause 1982
†Parectypodus sinclairi Simpson 1935
†Parectypodus sloani Schiebout 1974
†Parectypodus trovessartianus Cope 1882
†Parectypodus vanvaleni Sloan 1981
G. †Xyronomys Rigby, Jr. 1980
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†Xyronomys robinsoni Middleton and Dewar 2004
†Xyronomys swainae Rigby, Jr. 1980
Invalid names: Ectypodidae Sloan and Van Valen 1965 [synonym]
Fm. †Ptilodontidae Cope 1887
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G. †Baiotomeus Krause 1987
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†Baiotomeus douglassi Simpson 1935
†Baiotomeus lamberti Krause 1987
†Baiotomeus rhothonion Scott 2003
†Baiotomeus russelli Scott et al. 2002
G. †Kimbetohia Simpson 1936
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†Kimbetohia campi Simpson 1936
†Kimbetohia mziae Middleton and Dewar 2004
G. †Prochetodon Jepsen 1940
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†Prochetodon cavus Jepsen 1940
†Prochetodon foxi Krause 1987
†Prochetodon speirsae Scott 2004
†Prochetodon taxus Krause 1987
G. †Ptilodus Cope 1881
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†Ptilodus ferronensis Gazin 1941
†Ptilodus fractus Dorr 1952
†Ptilodus gnomus Scott et al. 2002
†Ptilodus kummae Krause 1977
†Ptilodus tsosiensis Sloan 1981
†Ptilodus wyomingensis Jepsen 1940
Invalid names: Chirox Cope 1884 [synonym]