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Cimolodonta Temporal range: Aptian-Eocene 125–35 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skull of Meniscoessus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Multituberculata
Suborder:	†Cimolodonta McKenna, 1975
Superfamilies
Paracimexomys group Djadochtatherioidea Ptilodontoidea Taeniolabidoidea Other families Boffiidae Cimolomyidae Corriebaataridae Eucosmodontidae Kogaionidae Microcosmodontidae

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 †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 ?Fractinus 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 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 (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 (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 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 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 (syn. Eucosmodontinae Jepsen, 1940 sensu McKenna & Bell, 1997)
    • Genus Clemensodon Krause, 1992
    • Genus Eucosmodon Matthew & Granger, 1921
    • Genus Stygimys Sloan & Van Valen, 1965
  • Family 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 Djadochtatherioidea 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
  • 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

References

1. T. H. Rich, P. A. Vickers-Rich, T. F. Flannery, B. P. Kear, D. J. Cantrill, P. Komarower, L. Kool, D. Pickering, P. Trusler, S. Morton, N. A. Van Klaveren, E. M. G. Fitzgerald (2009). "An Australian Multituberculate and Its Palaeobiogeographic Implications". Acta Palaeontologica Polonica. 54 (1): 1-6. doi:10.4202/app.2009.0101.{{cite journal}}: CS1 maint: multiple names: authors list (link)
2. Weaver, Lucas N.; Wilson, Gregory P.; Krumenacker, L. J.; Mclaughlin, Kayla; Moore, Jason R.; Varricchio, David J. (2019-03-04). "New multituberculate mammals from the mid-Cretaceous (lower Cenomanian) Wayan Formation of southeastern Idaho and implications for the early evolution of Cimolodonta". Journal of Vertebrate Paleontology. 39 (2): e1604532. doi:10.1080/02724634.2019.1604532. ISSN 0272-4634. S2CID 196655261.

Further reading

• 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 Multituberculata Cope, 1884.

External links

• "Introduction to Multituberculates". Berkeley. Archived from the original on February 20, 2023.
• "Multituberculates: Heyday of the longest lived mammalian order". Paleocene-mammals. Archived from the original on December 8, 2022.
• "Genera and species of Paleocene mammals - Part 1". Paleocene-mammals. Archived from the original on June 6, 2023.
• "Mammals". Paleofile. Archived from the original on April 12, 2023.

v t e Allotheria
Kingdom: Animalia Phylum: Chordata Class: Mammalia Clade: Theriiformes Synapsida see Synapsida Cynodontia see Cynodontia Mammalia see Mammalia Allotheria see below↓
Allotheria Allotheria Haramiyida? Gondwanatheria? Adalatherium Groeberiidae? Ferugliotheriidae? Argentodites? Ferugliotherium LACM 149371? Magallanodon Trapalcotherium Sudamericidae Bharattherium Galulatherium Gondwanatherium Greniodon? Lavanify Patagonia? Sudamerica Vintana Multituberculata Argillomys Baidabatyr? Hahnotherium Janumys Tagaria Tashtykia Gondwanatheria? Hahnodontidae? Allodontoidea Arginbaatar Glirodon Zofiabaatar Allodontidae Ctenacodon Passumys Psalodon Paulchoffatioidea Pinheirodontidae Bernardodon Bructerodon Cantalera Ecprepaulax Gerhardodon Iberodon Lavocatia Pinheirodon Paulchoffatiidae Bathmochoffatia Galveodon Guimarotodon Henkelodon Kielanodon Kuehneodon Meketibolodon Meketichoffatia Paulchoffatia Plesiochoffatia Pseudobolodon Renatodon Rugosodon Sunnyodon Xenachoffatia Plagiaulacoidea Plagiaulacidae Bolodon Morrisonodon Plagiaulax Eobaataridae Cheruscodon Dolichoprion Eobaatar Hakusanobaatar Heishanobaatar Iberica Indobaatar Liaobaatar Loxaulax Monobaatar? Nokerbaatar Parendotherium Sinobaatar Tedoribaatar Teutonodon Albionbaataridae Albionbaatar Kielanobaatar Proalbionbaatar Cimolodonta see below↓
Cimolodonta Cimolodonta Allocodon Ameribaatar Boffius Corriebaatar Fractinus Halodon Uzbekbaatar Viridomys Gondwanatheria? Paracimexomys group Bryceomys Cedaromys Cimexomys Dakotamys Paracimexomys Cimolomyidae Buginbaatar Cimolomys Essonodon Meniscoessus Paressodon Parikimys Kogaionidae Barbatodon Hainina Kogaionon Litovoi Eucosmodontidae Clemensodon Eucosmodon Stygimys Microcosmodontidae Acheronodon Microcosmodon Pentacosmodon Ptilodontoidea Filikomys Neoliotomus Cimolodontidae Anconodon Cimolodon Liotomus Neoplagiaulacidae Cernaysia Ectypodus Krauseia Mesodma Mesodmops Mimetodon Neoplagiaulax Nidimys Parectypodus Paressonodon Xanclomys Xyronomys Ptilodontidae Aenigmamys Baiotomeus Kimbetohia Prochetodon Ptilodus Taeniolabidoidea Bubodens? Catopsalis Erythrobaatar Valenopsalis Yubaatar Lambdopsalidae Lambdopsalis Prionessus Sphenopsalis Taeniolabididae Kimbetopsalis Taeniolabis Djadochtatherioidea Bulganbaatar Chulsanbaatar Nemegtbaatar Sloanbaataridae Kamptobaatar Nessovbaatar Sloanbaatar Djadochtatheriidae Catopsbaatar Djadochtatherium Kryptobaatar Mangasbaatar Tombaatar
See also: Plagiaulacida Category

• Cimolodonts
• Eocene extinctions
• Cretaceous first appearances