Suborder †Cimolodonta   McKenna, 1975 Superfamily Incertae sedis  
Family Incertae sedis  Subfamily Incertae sedis    Paracimexomys group  Archibald, 1982 Genus  Paracimexomys   Archibald, 1982 Species? † P. crossi   Cifelli, 1997  Species † P. magnus   (Sahni, 1972) Archibald, 1982  [Cimexomys magnus Sahni, 1972 ] Species † P. magister   (Fox, 1971) Archibald, 1982  [Cimexomys magister Fox, 1971 ] Species † P. perplexus   Eaton & Cifelli, 2001  Species † P. robisoni   Eaton & Nelson, 1991  Species † P. priscus   (Lillegraven, 1969) Archibald, 1982  [Cimexomys priscus Lillegraven, 1969 ; genotype Paracimexomys sensu Eaton & Cifelli, 2001 ] Species † P. propriscus   Hunter et al. , 2010   Genus  Cimexomys   Sloan & Van Valen, 1965 Species † C. antiquus   Fox, 1971  Species † C. gregoryi   Eaton, 1993  Species † C. judithae   Sahni, 1972  [Paracimexomys? judithae (Sahni, 1972) Archibald, 1982 ] Species † C. arapahoensis    Species † C. minor   Sloan & Van Valen, 1965  Species? † C. gratus   (Jepson, 1930) Lofgren, 1995  [Cimexomys hausoi Archibald, 1983 ; Eucosmodon gratus Jepson, 1930 ; Mesodma? ambigua? Jepson, 1940 ; Stygimus gratus Jepson, 1930 ]  Genus † Bryceomys   Eaton, 1995  Genus † Cedaromys   Eaton & Cifelli, 2001 Species † C. bestia   (Eaton & Nelson, 1991) Eaton & Cifelli, 2001  [=Paracimexomys? bestia Eaton & Nelson, 1991]  Species † C. parvus   Eaton & Cifelli, 2001   Genus? † Dakotamys   Eaton, 1995 ; E. Cret. CNA.    Family †Boffidae  Hahn & Hahn, 1983 Genus † Boffius   Vianey-Liaud, 1979 Species † Boffius splendidus   Vianey-Liaud, 1979  [Boffiidae Hahn & Hahn, 1983  sensu Kielan-Jaworowska & Hurum, 2001 ]   Family †Cimolomyidae  Marsh, 1889  sensu Kielan-Jaworowska & Hurum, 2001 Genus † Essonodon   Simpson, 1927 Species? † E. browni   Simpson, 1927  [cimolodontidae?  Kielan-Jaworowska & Hurum 2001]   Genus † Buginbaatar   Kielan-Jaworowska & Sochava, 1969  Genus †Meniscoessus  Cope, 1882  [Dipriodon Marsh, 1889 , Tripriodon Marsh, 1889 , Selenacodon Marsh, 1889 , Halodon Marsh, 1889 , Oracodon Marsh, 1889 ]  Genus † Cimolomys   Marsh, 1889  [=? Allacodon Marsh, 1889 ; Selenacodon Marsh, 1889 ] Species † C. clarki   Sahni, 1972  Species † C. gracilis   Marsh, 1889  [Cimolomys digona Marsh, 1889 ; Meniscoessus brevis ; Ptilodus gracilis Osborn, 1893 ; Selenacodon brevis Marsh, 1889 ] Species † C. trochuus    Lillegraven, 1969  Species † C. milliensis   Eaton, 1993a    Superfamily †Ptilodontoidea  Cope, 1887  sensu McKenna & Bell, 1997  e Kielan-Jaworowska & Hurum, 2001 
Family †Cimolodontidae  Marsh, 1889  sensu Kielan-Jaworowska & Hurum, 2001 Genus † Liotomus   Lemoine, 1882 Species? † L. marshi   (Lemoine, 1882) Cope, 1884  [Neoctenacodon marshi Lemoine, 1882 ?] [eucosmodontidae? McKenna & Bell, 1997]   Genus †Anconodon  Jepsen, 1940 Species? † A. lewisi   Simpson, 1935  Species † A. gibleyi   Simpson, 1935  Species † A. cochranensis   Russell, 1929  [Liotomus russelli (Simpson, 1935) ; Ectopodon cochranensis (Russell, 1967)]   Genus † Cimolodon   Marsh, 1889  [Nanomys Marsh, 1889 , Nonomyops Marsh, 1892] Species † C. electus    Species † C. nitidus   Marsh, 1889  [Allacodon rarus Marsh, 1892  sensu Clemens, 1964a ; Nanomys minutus Marsh, 1889 ; Nonomyops minutus (Marsh, 1889) Marsh, 1892]  Species † C. parvus    Species † C. similis   Fox, 1971    Family Incertae sedis   Family †Neoplagiaulacidae  Ameghino, 1890  [Neoplagiaulacinae Ameghino, 1890 sensu McKenna & Bell, 1997 ] Genus † Mesodma   Marsh, 1889  Genus  Ectypodus   Matthew & Cranger, 1921  [Charlesmooria Kühne, 1969 ] Species † E. aphronorus   Sloan, 1981  Species? † E. childei   Kühne, 1969  Species? † E. elaphus   Scott, 2005  Species? † E. lovei   (Sloan, 1966) Krishtlaka & Black, 1975  Species † E. musculus   Matthew & Granger, 1921  Species † E. powelli   Jepsen, 1940  Species? † E. simpsoni   Jepsen, 1930  Species † E. szalayi   Sloan, 1981  Species † E. tardus   Jepsen, 1930   Genus † Mimetodon   Jepsen, 1940  Genus † Neoplagiaulax   Lemoine, 1882 Species † N. annae   Vianey-Liaud, 1986  Species? † N. burgessi   Archibald, 1982  Species † N. cimolodontoides   Scott, 2005  Species † N. copei   Lemoine, 1885  Species † N. donaldorum   Scott & Krause, 2006  Species † N. eocaenus   Lemoine, 1880  Species † N. grangeri   Simpson, 1935  Species † N. hazeni   Jepsen, 1940  Species † N. hunteri   Krishtalka, 1973  Species † N. jepi   Sloan, 1987  Species † N. kremnus   Johnston & Fox, 1984  Species † N. macintyrei   Slaon, 1981  Species † N. macrotomeus   Wilson, 1956  Species † N. mckennai   Sloan, 1987  Species † N. nelsoni   Sloan, 1987  Species † N. nicolai   Vianey-Liaud, 1986  Species † N. paskapooensis   Scott, 2005  Species? † N. serrator   Scott, 2005  Species † N. sylvani   Vianey-Liaud, 1986   Genus † Parectypodus   Jepsen, 1930 Species † P. armstrongi   Johnston & Fox, 1984  Species? † P. corystes   Scott, 2003  Species? † P. foxi   Storer, 1991  Species † P. laytoni   Jepsen, 1940  Species † P. lunatus   Krause, 1982  [P. childei  Kühne, 1969] Species † P. simpsoni   Jepsen, 1940  Species † P. sinclairi   Simpson, 1935  Species † P. sloani   Schiebout, 1974  Species † P. trovessartianus   Cope, 1882  Species † P. sylviae   Rigsby, 1980  [Ectypodus sylviae Rigby, 1980 ] Species? † P. vanvaleni   Sloan, 1981   Genus † Cernaysia   Vianey-Liaud, 1986  Genus † Krauseia   Vianey-Liaud, 1986 Species † K. clemensi   Sloan, 1981  [Parectypodus clemensi Sloan, 1981 ]  Genus † Xyronomys   Rigby, 1980  Genus † Xanclomys   Rigby, 1980  Genus † Mesodmops   Tong & Wang, 1994   Family †Ptilodontidae  Cope, 1887  [Ptilodontinae Cope, 1887  sensu McKenna & Bell, 1997 ] Genus † Kimbetohia   Simpson, 1936 Species † K. cambi    [Simpson, 1936 ] Species † K. mziae    [Middleton and Dewar, 2004 ]  Genus † Ptilodus   Cope, 1881  [Chirox Cope, 1884 ] Species? † P. fractus    Species † P. kummae   Krause, 1977  Species † P. gnomus   Scott, Fox & Youzwyshyn, 2002  Species † P. mediaevus   Cope, 1881   [Ptilodus plicatus (Cope, 1884) ; Chirox plicatus Cope, 1884 P. ferronensis Gazin, 1941 ] Species † P. montanus   Douglass, 1908  [P. gracilis Gidley, 1909 ; P. admiralis Hay, 1930 ] Species † P. tsosiensis   Sloan, 1981  Species † P. wyomingensis   Jepsen, 1940   Genus † Baiotomeus   Krause, 1987  Genus † Prochetodon   Jepsen, 1940   Family †Kogaionidae  Rãdulescu & Samson, 1996 Genus † Kogaionon   Rãdulescu & Samson, 1996  Genus † Hainina   Vianey-Liaud, 1979 Species † H. belgica   Vianey-Liaud, 1979  Species † H. godfriauxi   Vianey-Liaud, 1979  Species † H. pyrenaica   Peláez-Campomanes, López-Martínez, Álvarez-Sierra & Daams, 2000  Species † H. vianeyae   Peláez-Campomanes, López-Martínez, Álvarez-Sierra & Daams, 2000   Genus † Barbatodon   Rãdulescu & Samson, 1986   Family †Eucosmodontidae  Jepsen, 1940  sensu Kielan-Jaworowska & Hurum, 2001  [Eucosmodontidae: Eucosmodontinae Jepsen, 1940 sensu McKenna & Bell, 1997] Genus † Clemensodon   Krause, 1992 Species † C. megaloba   Krause, 1992  [Kimbetohia cambi , in partim]  Genus †Eucosmodon  Matthew & Granger, 1921 Species † E. primus    [Granger & Simpson, 1929 or Sloan, 1981 ] Species † E. americanus   Cope, 1885  Species † E. molestus   Cope, 1869  (1886?) [Neoplagiaulax  molestus Cope, 1869 ]  Genus † Stygimys   Sloan & Van Valen, 1965   Family †Microcosmodontidae  Holtzman & Wolberg, 1977  [Eucosmodontidae: Microcosmodontinae Holtzman & Wolberg, 1977  sensu McKenna & Bell, 1997 ]  Superfamily †Djadochtatherioidea  Kielan-Jaworowska & Hurum, 1997  sensu Kielan-Jaworowska & Hurum, 2001 [Djadochtatheria Kielan-Jaworowska & Hurum, 1997 ]
Genus? † Bulganbaatar   Kielan-Jaworowska, 1974  Genus? † Chulsanbaatar   Kielan-Jaworowska, 1974  Genus † Nemegtbaatar   Kielan-Jaworowska, 1974  Family †Sloanbaataridae  Kielan-Jaworowska, 1974  Family †Djadochtatheriidae  Kielan-Jaworowska $ Hurum, 1997 Genus † Djadochtatherium   Simpson, 1925 Species † D. matthewi   Simpson, 1925 [Catopsalis matthewi Simpson, 1925 ]  Genus † Catopsbaatar   Kielan-Jaworowska, 1974 Species † C. catopsaloides   (Kielan-Jaworowska, 1974) Kielan-Jaworowska, 1994  [Djadochtatherium catopsaloides Kielan-Jaworowska, 1974 ]  Genus † Tombaatar   Kielan-Jaworowska, 1974 Species † T. sabuli    Rougier, Novacek & Dashzeveg, 1997  Genus † Kryptobaatar   Kielan-Jaworowska, 1970  [Gobibaatar  Kielan-Jaworowska, 1970 , Tugrigbaatar  Kielan-Jaworowska  & Dashzeveg, 1978 ] Species † K. saichanensis   Kielan-Jaworowska  & Dashzeveg, 1978  [Tugrigbaatar saichaenensis Kielan-Jaworowska  & Dashzeveg, 1978 ] Species † K. dashzevegi   Kielan-Jaworowska, 1970  Species † K. mandahuensis    Smith, Guo & Sun, 2001  Species † K. gobiensis   Kielan-Jaworowska, 1970   [Gobibaatar parvus Kielan-Jaworowska, 1970  ]   Superfamily †Taeniolabidoidea  Granger & Simpson, 1929 sensu Kielan-Jaworowska & Hurum, 2001