Editing Mesodma

{{Short description|Extinct family of mammals}}
{{Automatic taxobox
| fossil_range = {{Fossil range|83.6|56}} <small>Possible [[Cenomanian]] record</small>
| image = MesodmaformosalifereconJF.png
| image_caption = life restoration
| taxon = Mesodma
| authority = 
| subdivision_ranks = Species
| subdivision = * ''M. ambigua''
* ''M. formosa''
* ''M. hensleighi''
* ''M. pygmaea''
* ''M. senecta''
* ''M. thompsoni''
}}

'''''Mesodma''''' is an extinct [[genus]] of [[mammal]], a member of the extinct order [[Multituberculata]] within the suborder [[Cimolodonta]], family [[Neoplagiaulacidae]]. It lived during the upper [[Cretaceous]] and [[Paleocene]] [[Period (geology)|Periods]] of what is now [[North America]]. The earliest definitive record is from the late [[Santonian]] stage strata of the [[Straight Cliffs Formation]].<ref>{{cite journal |last1=Eaton |first1=Jeffrey G. |title=Santonian (late Cretaceous) mammals from the John Henry Member of the Straight Cliffs Formation, Grand Staircase-Escalante National Monument, Utah |journal=Journal of Vertebrate Paleontology |date=12 June 2006 |volume=26 |issue=2 |pages=446–460 |doi=10.1671/0272-4634(2006)26[446:SLCMFT]2.0.CO;2|s2cid=130526200 }}</ref> A single [[premolar]] tooth from the lower [[Cenomanian]] stage strata of the [[Cedar Mountain Formation]] has been tentatively assigned to this genus based on its similarity, but its describers noted that it is unlikely that ''Mesodma'' lived during that time.<ref>{{cite journal|last1=Eaton |first1=Jeffrey G. |last2=Cifelli|first2=Richard L.|year=2001|title=Multituberculate mammals from near the Early-Late Cretaceous boundary, Cedar Mountain Formation, Utah |journal=Acta Palaeontologica Polonica |volume=46|issue=4|pages=453–518|s2cid=129909933}}</ref>

==Species==
*'''''Mesodma ambigua'''''
**Place: Mantua Lentil, [[Wyoming]] (USA)
**Age: [[Maastrichtian]]-Puercan, Upper Cretaceous - Paleocene
**Weight: about 55 g
*'''''Mesodma formosa'''''
**Place: Hell Creek and Frenchman Formation, USA & Canada.  This species is possibly also known from [[Utah]].
**Age: Maastrichtian-Puercan (Upper Cretaceous to the Paleocene).  
**Weight: about 30 g
*'''''Mesodma hensleighi'''''
**Place: [[Hell Creek Formation]] in the [[United States|U.S.]] and in [[Saskatchewan]], [[Canada]]. 
**Age: [[Maastrichtian]] (Upper Cretaceous).  
**Weight: around 15 g
*'''''Mesodma pygmaea'''''
**Place: Gidley Quarry, Montana, as well as Wyoming and Alberta, Canada
**Age: Torrejonian-Tiffanian (Middle Paleocene). 
**Weight: about 8 g
*'''''Mesodma senecta'''''
**Age: Campanian (Upper Cretaceous)
**Weight: about 50 g
*'''''Mesodma thompsoni''''' (=''M. garfieldensis'')<ref>{{cite journal | last1 = Smith | first1 = Stephanie M. | last2 = Wilson | first2 = Gregory P. | year = 2016 | title = Species Discrimination of Co-Occurring Small Fossil Mammals: A Case Study of the Cretaceous-Paleogene Multituberculate Genus Mesodma | journal = Journal of Mammalian Evolution | volume = 24 | issue = 2 | pages = 147–157 | doi = 10.1007/s10914-016-9332-2 | s2cid = 254703663 }}</ref>
**Place: St Mary River Formation & Montana and Wyoming of the US and Canada
**Age: Maastrichtian-Puercan, Upper Cretaceous - Paleocene
**Weight: about 55 g

The species ''"Mesodma" primaeva'' from the [[Judithian]] of Western Interior of North America was formerly assigned to the genus ''Mesodma'', but subsequently it was made the [[type species]] of a separate genus ''[[Filikomys]]''.<ref>{{Cite journal |last1=Weaver |first1=Lucas N. |last2=Varricchio |first2=David J. |last3=Sargis |first3=Eric J. |last4=Chen |first4=Meng |last5=Freimuth |first5=William J. |last6=Wilson Mantilla |first6=Gregory P. |year=2020 |title=Early mammalian social behaviour revealed by multituberculates from a dinosaur nesting site |journal=Nature Ecology & Evolution |volume=5 |issue=1 |pages=32–37 |doi=10.1038/s41559-020-01325-8 |pmid=33139921 |s2cid=226241443 }}</ref>

== References ==
{{Reflist}}

== Further reading ==
*Osborn (1891); "A review of the Cretaceous Mammalia". ''Proc. Acad. Nat. Sci. Phila.'' 124 - 135.
*Simpson (1929), "American Mesozoic Mammalia". Mem. Peabody Mus. Nat. Hist. iii (i): p.&nbsp;1-235.
*Clemens (1963), "Fossil mammals of the type Lance formation Wyoming. Part I. Introduction and Multituberculata". Univ. Calif. Pub;. ''Geol. Sci.'' '''48''', p.&nbsp;1-105. (According to Peabody Museum database.)
*Marsh (1889), "Discovery of Cretaceous Mammalia". ''Am. J. Sci.'' '''(3) xxxviii''', p.&nbsp;177-180.
*Archibald (1982), ''A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana''. Univ. of Calif. Publ. Geol. Sci. 122xvi+, 286pp.
*Jepsen (1940), "Paleocene faunas of the Polecat Bench formation, Park County, Wyoming". ''Pro. Amer. Philos. Soc'' '''83''', p.&nbsp;217-341, 21 figs., 5 pls.
*{{cite journal | last1 = Kielan-Jaworowska | first1 = Z | last2 = Hurum | first2 = JH | year = 2001 | title = Phylogeny and Systematics of multituberculate mammals | journal = Palaeontology | volume = 44 | issue = 3 | pages = 389–429 | doi=10.1111/1475-4983.00185| s2cid = 83592270 | url = http://doc.rero.ch/record/14775/files/PAL_E1903.pdf }}

{{Allotheria|C.}}
{{Taxonbar|from=Q16985422}}

[[Category:Ptilodontoidea]]
[[Category:Paleocene genus extinctions]]
[[Category:Cretaceous mammals of North America]]
[[Category:Paleocene mammals of North America]]
[[Category:Ojo Alamo Formation]]
[[Category:Milk River Formation]]
[[Category:Hell Creek fauna]]
[[Category:Prehistoric mammal genera]]