# Microcosmodon > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Microcosmodon > Markdown URL: https://mediated.wiki/source/Microcosmodon.md > Source: https://en.wikipedia.org/wiki/Microcosmodon > Source revision: 1283168122 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Extinct family of mammals Microcosmodon Temporal range: 66.043–55.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: †Multituberculata Family: †Microcosmodontidae Genus: †Microcosmodon Species M. arcuatus M. conus (type species) M. harleyi M. rosei M. woodi ***Microcosmodon*** is a [mammal](/source/Mammal) [genus](/source/Genus) from the [Paleocene](/source/Paleocene) of [North America](/source/North_America). It was a member of the extinct order [Multituberculata](/source/Multituberculata), and lies within the suborder [Cimolodonta](/source/Cimolodonta) and family [Microcosmodontidae](/source/Microcosmodontidae). The genus *Microcosmodon* was named by G.L. Jepsen in 1930. ## Species The species ***Microcosmodon arcuatus*** was named by P.A. Johnston and R.C. Fox in 1984. [Fossil](/source/Fossil) remains have been found in the Puercan (Paleocene)-age [strata](/source/Stratum) Rav W-1 of [Saskatchewan](/source/Saskatchewan), Canada. The [holotype](/source/Holotype) is in the [University of Alberta](/source/University_of_Alberta) collection. When alive, the creature weighed about the same as a well-fed mouse (about 30 g). The [type species](/source/Type_species) ***Microcosmodon conus*** was named by [G.L. Jepsen](/source/G.L._Jepsen) in 1930. Remains have been found in the Tiffanian (Paleocene)-age strata of the Polecat Bench Formation of [Wyoming](/source/Wyoming) (United States) and Saskatchewan, Canada. This species would have weighed around 15 g. The species ***Microcosmodon harleyi*** was named by A. Weil in 1998. Remains have been found in the Puercan (Paleocene)-age strata of the Tullock Formation in [Montana](/source/Montana) (USA). "The presence of the new species suggests that microcosmodontine species richness in the Western Interior was as high at the beginning of the Paleocene as at its end," (Weil, 1998). The species would have weighed about 20 g. The species ***Microcosmodon rosei*** was named by D.W. Krause in 1980. Remains have been found in the Clarforkian (Paleocene)-age strata of the Willwood Formation of Wyoming. This species weighed a fairly standard mouse-sized 25 g+. The species ***Microcosmodon woodi*** was named by R.C. Holtzman and D.L. Wolberg in 1977. It is also known as *Eucosmodontid woodi* (Weil 1998). Remains have been found in the Middle Paleocene-age strata of Montana and [North Dakota](/source/North_Dakota) (USA) and [Alberta](/source/Alberta), Canada. However, Weil A. (1998) found that this material "does not belong to this genus or subfamily." ## References - Weil (1998), "A new species of *Microcosmodon* (Mammalia: Multituberculata) from the Paleocene Tullock Formation of Montana, and an argument for the Micrcosmodontinae". *PaleoBios* **18**. - Krause (1980), "Multituberculates from the Clarkforkian Land-Mammal Age, late Paleocene-early Eocene, of western North America". *J. Paleont.* **54(6)**, p. 1163-1183. - Jepsen (1930), "Stratigraphy and paleontology of the Paleocene of northeastern Park County, Wyoming". *Proceedings of the American Philosophical Society* **69(1)**, p. 463-528. - Holtzman & Wolberg (1977), "The Microsmodontinae and *Microcosmodon woodi*, new Multituberculata taxa (Mammalia) from the Late Paleocene of North America". *Sci. Publ. of the Sci. Mus. of Minnesota* **4(1)**, p. 1-13. - Kielan-Jaworowska Z & Hurum JH (2001), "Phylogeny and Systematics of multituberculate mammals". *Palaeontology* **44**, p. 389-429. - Johnston & Fox (1984), "Paleocene and Late Cretaceous mammals from Saskatchewan, Canada". Palaeontogr. Abt. A: Paläozool., Stratigr. 186, p. 163-222. - Much of this information has been derived from [\[1\]](https://web.archive.org/web/20120716204423/http://home.arcor.de/ktdykes/taenio.htm) MESOZOIC MAMMALS: [Eucosmodontidae](/source/Eucosmodontidae), [Microcosmodontidae](/source/Microcosmodontidae) and [Taeniolabidoidea](/source/Taeniolabidoidea), an Internet directory. 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 Cambelodon Cantalera Ecprepaulax Gerhardodon Iberodon Lavocatia Pinheirodon Paulchoffatiidae Angrivarodon Bathmochoffatia Cimbriodon Galveodon Guimarotodon Henkelodon Kielanodon Kuehneodon Meketibolodon Meketichoffatia Parendotherium? Paulchoffatia Plesiochoffatia Pseudobolodon Renatodon Rugosodon Sunnyodon Xenachoffatia Plagiaulacoidea Plagiaulacidae Bolodon Morrisonodon Novaculadon Plagiaulax Eobaataridae Cheruscodon Dolichoprion Eobaatar Hakusanobaatar Heishanobaatar Iberica Indobaatar Jeholbaatar Liaobaatar Loxaulax Monobaatar? Nokerbaatar Parendotherium? Sinobaatar Tedoribaatar Teutonodon Albionbaataridae Albionbaatar Kielanobaatar Proalbionbaatar Cimolodonta see below↓ Cimolodonta Cimolodonta Allocodon Ameribaatar Boffius Corriebaatar Fractinus Halodon Koshikibaatar Uzbekbaatar Viridomys Gondwanatheria? Paracimexomys group Bryceomys Cedaromys Cimexomys Dakotamys Paracimexomys Cimolomyidae Buginbaatar Camurodon Cimolomys Essonodon Meniscoessus Paressodon Parikimys Kogaionidae Barbatodon Hainina Kogaionon Litovoi Eucosmodontidae Clemensodon Eucosmodon Stygimys Microcosmodontidae Acheronodon Golercosmodon Kaniqsiqcosmodon Microcosmodon Pentacosmodon Ptilodontoidea Filikomys Neoliotomus Cimolodontidae Anconodon Cimolodon Liotomus Neoplagiaulacidae Cernaysia Ectypodus Krauseia Mesodma Mesodmops Mimetodon Neoplagiaulax Nidimys Notopolytheles? 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 Guibaatar Kryptobaatar Mangasbaatar Qayaqgruk Tombaatar See also: Plagiaulacida Category Taxon identifiers Microcosmodon Wikidata: Q767786 Wikispecies: Microcosmodon EoL: 4523570 GBIF: 4831297 IRMNG: 1199095 Open Tree of Life: 3615322 Paleobiology Database: 39843 --- Adapted from the Wikipedia article [Microcosmodon](https://en.wikipedia.org/wiki/Microcosmodon) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Microcosmodon?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.