Mesodma
Temporal range: 83.6–56 Ma Possible Cenomanian record
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: †Multituberculata
Family: †Neoplagiaulacidae
Genus: †Mesodma
Species
  • 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 Periods of what is now North America. The earliest definitive record is from the late Santonian stage strata of the Straight Cliffs Formation.[1] 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.[2]

Species

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.[4]

References

  1. ^ Eaton, Jeffrey G. (12 June 2006). "Santonian (late Cretaceous) mammals from the John Henry Member of the Straight Cliffs Formation, Grand Staircase-Escalante National Monument, Utah". Journal of Vertebrate Paleontology. 26 (2): 446–460. doi:10.1671/0272-4634(2006)26[446:SLCMFT]2.0.CO;2. S2CID 130526200.
  2. ^ Eaton, Jeffrey G.; Cifelli, Richard L. (2001). "Multituberculate mammals from near the Early-Late Cretaceous boundary, Cedar Mountain Formation, Utah". Acta Palaeontologica Polonica. 46 (4): 453–518. S2CID 129909933.
  3. ^ Smith, Stephanie M.; Wilson, Gregory P. (2016). "Species Discrimination of Co-Occurring Small Fossil Mammals: A Case Study of the Cretaceous-Paleogene Multituberculate Genus Mesodma". Journal of Mammalian Evolution. 24 (2): 147–157. doi:10.1007/s10914-016-9332-2. S2CID 254703663.
  4. ^ Weaver, Lucas N.; Varricchio, David J.; Sargis, Eric J.; Chen, Meng; Freimuth, William J.; Wilson Mantilla, Gregory P. (2020). "Early mammalian social behaviour revealed by multituberculates from a dinosaur nesting site". Nature Ecology & Evolution. 5 (1): 32–37. doi:10.1038/s41559-020-01325-8. PMID 33139921. S2CID 226241443.

Further reading

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