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 (monophyletic) 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 â Cimolodonta <small>McKenna, 1975</small>
- Superfamily Incertae sedis
- Family Incertae sedis
- Subfamily Incertae sedis
- Genus ?Ameribaatar <small>Eaton & Cifelli, 2001</small>
- Genus ?Bryceomys <small>Eaton, 1995</small>
- Genus Cedaromys <small>Eaton & Cifelli, 2001</small>
- Genus ?Dakotamys <small>Eaton, 1995</small>; (Early Cretaceous, Central North America)
- Genus ?Fractinus <small>Higgins, 2003</small>
- Genus Halodon <small>Marsh, 1889</small>
- Genus Ptilodus <small>(Marsh, 1889) Gidley, 1909</small>
- Genus ?Uzbekbaatar <small>Kielan-Jaworowska & Nesov, 1992</small>
- Genus ?Barbatodon <small>Rãdulescu & Samson, 1986</small>
- "Paracimexomys group" <small>Archibald, 1982</small>
- Genus Paracimexomys <small>Archibald, 1982</small>
- Genus ?Cimexomys <small>Fox, 1971</small>
- Genus Cimexomys <small>Sloan & Van Valen, 1965</small> sensu stricto?
- Family Boffiidae <small>Hahn & Hahn, 1983</small>
- Genus Boffius <small>Vianey-Liaud, 1979</small>
- Family Cimolomyidae <small>Marsh, 1889</small> sensu <small>Kielan-Jaworowska & Hurum, 2001</small>
- Genus Essonodon <span style="font-variant: small-caps">Simpson, 1927</span>
- Genus Buginbaatar <small>Kielan-Jaworowska & Sochava, 1969</small>
- Genus Meniscoessus <small>Cope, 1882</small> (syn. Dipriodon <small>Marsh, 1889</small>, Tripriodon <small>Marsh, 1889</small>, Selenacodon <small>Marsh, 1889</small>, Halodon <small>Marsh, 1889</small>, Oracodon <small>Marsh, 1889</small>)
- Genus Cimolomys <small>Marsh, 1889</small> (syn. ?Allacodon <small>Marsh, 1889</small>; Meniscoessus; Ptilodus; Selenacodon <small>Marsh, 1889</small>)
- Superfamily Ptilodontoidea <small>Cope, 1887 sensu McKenna & Bell, 1997 & Kielan-Jaworowska & Hurum, 2001</small>
- Family Cimolodontidae <small>Marsh, 1889</small> sensu <small>Kielan-Jaworowska & Hurum, 2001</small>
- Genus Liotomus <small>Lemoine, 1882</small>
- Genus Essonodon <small>Simpson, 1927</small>
- Genus Anconodon <small>Jepsen, 1940</small>
- Genus Cimolodon <small>Marsh, 1889</small> (syn. Nanomys <small>Marsh, 1889</small>, Nonomyops <small>Marsh, 1892</small>)
- Genus Neoliotomus <small>Jepsen, 1930</small>
- Family Ptilodontidae <small>Cope, 1887</small> (syn. Ptilodontinae <small>Cope, 1887 sensu McKenna & Bell, 1997</small>)
- Genus Kimbetohia <small>Simpson, 1936</small>
- Genus Ptilodus <small>Cope, 1881</small> (Chirox <small>Cope, 1884</small>)
- Genus Baiotomeus <small>Krause, 1987</small>
- Genus Prochetodon <small>Jepsen, 1940</small>
- Family Neoplagiaulacidae <small>Ameghino, 1890</small> (syn. Neoplagiaulacinae <small>Ameghino, 1890 sensu McKenna & Bell, 1997</small>)
- Genus Mesodma <small>Marsh, 1889</small>
- Genus Ectypodus <small>Matthew & Cranger, 1921</small> (syn. Charlesmooria <small>Kühne, 1969</small>)
- Genus Mimetodon <small>Jepsen, 1940</small>
- Genus Neoplagiaulax <small>Lemoine, 1882</small>
- Genus Parectypodus <small>Jepsen, 1930</small>
- Genus Cernaysia <small>Vianey-Liaud, 1986</small>
- Genus Krauseia <small>Vianey-Liaud, 1986</small>
- Genus Xyronomys <small>Rigby, 1980</small>
- Genus Xanclomys <small>Rigby, 1980</small>
- Genus Mesodmops <small>Tong & Wang, 1994</small>
- Family Kogaionidae <small>Rãdulescu & Samson, 1996</small>
- Genus Barbatodon <small>Rãdulescu & Samson, 1996</small>
- Genus Hainina <small>Vianey-Liaud, 1979</small>
- Genus Kogaionon <small>Rãdulescu & Samson, 1996</small>
- Family Eucosmodontidae <small>Jepsen, 1940 sensu Kielan-Jaworowska & Hurum, 2001</small> (syn. Eucosmodontinae <small>Jepsen, 1940 sensu McKenna & Bell, 1997</small>)
- Genus Clemensodon <small>Krause, 1992</small>
- Genus Eucosmodon <small>Matthew & Granger, 1921</small>
- Genus Stygimys <small>Sloan & Van Valen, 1965</small>
- Family Microcosmodontidae <small>Holtzman & Wolberg, 1977</small> (syn. Microcosmodontinae <small>Holtzman & Wolberg, 1977 McKenna & Bell, 1997</small>)
- Genus Pentacosmodon <small>Jepsen, 1940</small>
- Genus Acheronodon <small>Archibald, 1982</small>
- Genus Microcosmodon <small>Jepsen, 1930</small>
- Superfamily Djadochtatherioidea <small>Kielan-Jaworowska & Hurum, 1997 sensu Kielan-Jaworowska & Hurum, 2001</small> (syn. Djadochtatheria <small>Kielan-Jaworowska & Hurum, 1997</small>)
- Genus ?Bulganbaatar <small>Kielan-Jaworowska, 1974</small>
- Genus ?Chulsanbaatar <small>Kielan-Jaworowska, 1974</small>
- Genus Nemegtbaatar <small>Kielan-Jaworowska, 1974</small>
- Family Sloanbaataridae <small>Kielan-Jaworowska, 1974</small>
- Genus Kamptobaatar <small>Kielan-Jaworowska, 1970</small>
- Genus Nessovbaatar <small>Kielan-Jaworowska & Hurum, 1997</small>
- Genus Sloanbaatar <small>Kielan-Jaworowska, 1974</small>
- Family Djadochtatheriidae <small>Kielan-Jaworowska & Hurum, 1997</small>
- Genus Djadochtatherium <small>Simpson, 1925</small>
- Genus Catopsbaatar <small>Kielan-Jaworowska, 1974</small>
- Genus Tombaatar <small>Kielan-Jaworowska, 1974</small>
- Genus Kryptobaatar <small>Kielan-Jaworowska, 1970</small> (syn. Gobibaatar <small>Kielan-Jaworowska, 1970</small>, Tugrigbaatar <small>Kielan-Jaworowska & Dashzeveg, 1978</small>)
- Superfamily Taeniolabidoidea <small>Granger & Simpson, 1929</small> sensu <small>Kielan-Jaworowska & Hurum, 2001</small>
- Genus Prionessus <small>Matthew & Granger, 1925</small>
- Family Taeniolabididae <small>Granger & Simpson, 1929</small>
- Genus Kimbetopsalis <small>Sarah, 2015</small>
- Genus Taeniolabis <small>Cope, 1882</small>
- Family Lambdopsalidae <small> Chow & Qi, 1978</small>
- Genus Sphenopsalis <small>Matthew, Granger & Simpson, 1928</small>
- Genus Lambdopsalis <small>Chow & Qi, 1978</small>
References
Further reading
External links