Cimolodonta

Cimolodonta Temporal range: Cretaceous-Eocene
A reconstruction of Ptilodus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	Multituberculata
Suborder:	Cimolodonta
Superfamilies
Paracimexomys group Djadochtatherioidea Ptilodontoidea Taeniolabidoidea Other families Boffiidae Cimolomyidae Eucosmodontidae Kogaionidae Microcosmodontidae

The Cimolodonta are a taxon of extinct mammals that lived from the Cretaceous to the Eocene. They were some of the more derived members of the extinct order Multituberculata. 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".

Cimolodonta is apparently a natural (monophyletic) suborder. Remains have been identified from across the Northern Hemisphere. 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; (Early Cretaceous, Central North America)
      • Genus? Fractimus Higgins, 2003
      • Genus Halodon Marsh, 1889
      • Genus Ptilodus (Marsh, 1889) 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 Boffidae 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 (syn. Dipriodon Marsh, 1889, Tripriodon Marsh, 1889, Selenacodon Marsh, 1889, Halodon Marsh, 1889, Oracodon Marsh, 1889)
      • Genus Cimolomys Marsh, 1889 (syn. ?Allacodon Marsh, 1889; Meniscoessus; Ptilodus; Selenacodon 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 [syn. Nanomys Marsh, 1889, Nonomyops Marsh, 1892]
      • Genus Neoliotomus Jepsen, 1930
  • Family Ptilodontidae Cope, 1887 sensu McKenna & Bell, 1997
    • Subfamily Neoplagiaulacidae Ameghino, 1890 (syn Neoplagiaulacinae Ameghino, 1890 sensu McKenna & Bell, 1997)
      • Genus Mesodma Marsh, 1889
      • Genus Ectypodus Matthew & Cranger, 1921 (Syn. Charlesmooria Kühne, 1969)
      • Genus Mimetodon Jepsen, 1940
      • Genus Neoplagiaulax Lemoine, 1882
      • Genus Parectypodus Jepsen, 1930
      • Genus Carnaysia Vianey-Liaud, 1986
      • Genus Krauseia Vianey-Liaud, 1986
      • Genus Xironomys Rigby, 1980
      • Genus Xancolomys Rigby, 1980
      • Genus Mesodmops Tong & Wang, 1994
    • Subfamily Ptilodontidae Cope, 1887 (syn Ptilodontinae Cope, 1887 sensu McKenna & Bell, 1997)
      • Genus Kimbetohia Simpson, 1936
      • Genus Ptilodus Cope, 1881 (Chirox Cope, 1884)
      • Genus Baiotomeus Krause, 1987
      • Genus Prochetodon Jepsen, 1940
      • Family Kogaionidae Rãdulescu & Samson, 1996
        • Genus Barbatodon Rãdulescu & Samson, 1996
        • Genus Hainina Vianey-Liaud, 1979
        • Genus Kogaion Rãdulescu & Samson, 1996
    • Subfamily Eucosmodontidae Jepsen, 1940 sensu Kielan-Jaworowska & Hurum, 2001 (syn. Eucosmodontinae Jepsen, 1940 sensu McKenna & Bell, 1997)
      • Genus Clemensodon Krause, 1992
      • Genus Eucosmodon Matthew & Granger, 1921
      • Genus Stygimys Sloan & Van Valen, 1965
    • Subfamily Microcosmodontidae Holtzman & Wolberg, 1977 (syn Microcosmodontinae Holtzman & Wolberg, 1977 McKenna & Bell, 1997)
      • Genus Pentacosmodon Jepsen, 1940
      • Genus Acheronodon Archibald, 1982
      • Genus Microcosmodon Jepsen, 1930
• Superfamily Djadochtatheroidea Kielan-Jaworowska & Hurum, 1997 sensu Kielan-Jaworowska & Hurum, 2001 (syn 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
    • • 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 (syn Gobibaatar Kielan-Jaworowska, 1970, Tugrigbaatar Kielan-Jaworowska & Dashzeveg, 1978)
• Superfamily Taeniolabidoidea Granger & Simpson, 1929 sensu Kielan-Jaworowska & Hurum, 2001
  • Family Taeniolabididae Granger & Simpson, 1929
    • Genus Catopsalis Cope, 1882
    • Genus Prionessus Matthew & Granger, 1925
    • Genus Lambdopsalis Chow & Qi, 1978
    • Genus Sphenopsalis Matthew, Granger & Simpson, 1928
    • Genus Taeniolabis Cope, 1882

References

• Kielan-Jaworowska Z. and Hurum J.H. (2001), "Phylogeny and Systematics of multituberculate mammals". Paleontology 44, p. 389-429.
• Much of this information has been derived from [1] Multituberculata Cope, 1884.