Cimolodonta

Cimolodonta is a clade of multituberculate mammals that lived from the Cretaceous to the Eocene. They probably lived something of a rodent-like existence until their ecological niche was assumed by true rodents. The more basal multituberculates are found in a different suborder, "Plagiaulacida", a paraphyletic group containing all non cimolodontan multituberculates.
Cimolodonta is apparently a natural suborder. Remains have been identified from across the Northern Hemisphere. They first appeared during the Aptian, and completely replaced the more primitive plagiaulacidans by the early Late Cretaceous. The taxon is recognized as the informal Paracimexomys group and the superfamilies Djadochtatherioidea, Taeniolabidoidea, and Ptilodontoidea. Additionally, and of uncertain affinities, are the families Cimolomyidae, Boffiidae, Eucosmodontidae, Kogaionidae, Microcosmodontidae and the two genera Uzbekbaatar and Viridomys. More precise placement of these types awaits further discoveries and analysis.

Taxonomy

Suborder †Cimolodonta McKenna, 1975

Superfamily Incertae sedis
* Family Incertae sedis
** Subfamily Incertae sedis
*** Genus ?Ameribaatar Eaton & Cifelli, 2001
*** Genus ?Bryceomys Eaton, 1995
*** Genus Cedaromys Eaton & Cifelli, 2001
*** Genus ?Dakotamys Eaton, 1995;
*** Genus ?Fractinus Higgins, 2003
*** Genus Halodon Marsh, 1889
*** Genus Ptilodus Gidley, 1909
*** Genus ?Uzbekbaatar Kielan-Jaworowska & Nesov, 1992
*** Genus ?Barbatodon Rãdulescu & Samson, 1986
"Paracimexomys group" Archibald, 1982
* Genus Paracimexomys Archibald, 1982
* Genus ?Cimexomys Fox, 1971
* Genus Cimexomys Sloan & Van Valen, 1965 sensu stricto?
Family Boffiidae Hahn & Hahn, 1983
* Genus Boffius Vianey-Liaud, 1979
Family Cimolomyidae Marsh, 1889 sensu Kielan-Jaworowska & Hurum, 2001
* Genus Essonodon Simpson, 1927
* Genus Buginbaatar Kielan-Jaworowska & Sochava, 1969
* Genus Meniscoessus Cope, 1882
* Genus Cimolomys Marsh, 1889
Superfamily Ptilodontoidea Cope, 1887 sensu McKenna & Bell, 1997 & Kielan-Jaworowska & Hurum, 2001
* Family Cimolodontidae Marsh, 1889 sensu Kielan-Jaworowska & Hurum, 2001
** Genus Liotomus Lemoine, 1882
** Genus Essonodon Simpson, 1927
** Genus Anconodon Jepsen, 1940
** Genus Cimolodon Marsh, 1889
** Genus Neoliotomus Jepsen, 1930
* Family Ptilodontidae Cope, 1887
** Genus Kimbetohia Simpson, 1936
** Genus Ptilodus Cope, 1881
** Genus Baiotomeus Krause, 1987
** Genus Prochetodon Jepsen, 1940
* Family Neoplagiaulacidae Ameghino, 1890
** Genus Mesodma Marsh, 1889
** Genus Ectypodus Matthew & Cranger, 1921
** Genus Mimetodon Jepsen, 1940
** Genus Neoplagiaulax Lemoine, 1882
** Genus Parectypodus Jepsen, 1930
** Genus Cernaysia Vianey-Liaud, 1986
** Genus Krauseia Vianey-Liaud, 1986
** Genus Xyronomys Rigby, 1980
** Genus Xanclomys Rigby, 1980
** Genus Mesodmops Tong & Wang, 1994
* Family Kogaionidae Rãdulescu & Samson, 1996
** Genus Barbatodon Rãdulescu & Samson, 1996
** Genus Hainina Vianey-Liaud, 1979
** Genus Kogaionon Rãdulescu & Samson, 1996
* Family Eucosmodontidae Jepsen, 1940 sensu Kielan-Jaworowska & Hurum, 2001
** Genus Clemensodon Krause, 1992
** Genus Eucosmodon Matthew & Granger, 1921
** Genus Stygimys Sloan & Van Valen, 1965
* Family Microcosmodontidae Holtzman & Wolberg, 1977
** Genus Pentacosmodon Jepsen, 1940
** Genus Acheronodon Archibald, 1982
** Genus Microcosmodon Jepsen, 1930
Superfamily Djadochtatherioidea Kielan-Jaworowska & Hurum, 1997 sensu Kielan-Jaworowska & Hurum, 2001
* Genus ?Bulganbaatar Kielan-Jaworowska, 1974
* Genus ?Chulsanbaatar Kielan-Jaworowska, 1974
* Genus Nemegtbaatar Kielan-Jaworowska, 1974
* Family Sloanbaataridae Kielan-Jaworowska, 1974
** Genus Kamptobaatar Kielan-Jaworowska, 1970
** Genus Nessovbaatar Kielan-Jaworowska & Hurum, 1997
** Genus Sloanbaatar Kielan-Jaworowska, 1974
* Family Djadochtatheriidae Kielan-Jaworowska & Hurum, 1997
** Genus Djadochtatherium Simpson, 1925
** Genus Catopsbaatar Kielan-Jaworowska, 1974
** Genus Tombaatar Kielan-Jaworowska, 1974
** Genus Kryptobaatar Kielan-Jaworowska, 1970
Superfamily Taeniolabidoidea Granger & Simpson, 1929 sensu Kielan-Jaworowska & Hurum, 2001
* Genus Prionessus Matthew & Granger, 1925
* Family Taeniolabididae Granger & Simpson, 1929
** Genus Kimbetopsalis Sarah, 2015
** Genus Taeniolabis Cope, 1882
* Family Lambdopsalidae Chow & Qi, 1978
** Genus Sphenopsalis Matthew, Granger & Simpson, 1928
** Genus Lambdopsalis Chow & Qi, 1978