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Mesodma ✝

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Description

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.

From Wikipedia article at https://en.wikipedia.org/wiki/Mesodma, which is released under the Creative Commons Attribution-Share-Alike License 3.0.

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4831429	https://www.gbif.org/species/4831429
PaleoBioDB ID (PBDB)	39815	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=39815

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Chordata : Mammalia : Ptilodontidae : Mesodma

Taxonomy (PBDB)

Life : Animalia : Chordata : Mammalia : Multituberculata : Neoplagiaulacidae : Mesodma

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Triploblastica	Lankester 1877
-	Nephrozoa	Jondelius et al. 2002
-	Deuterostomia	Grobben 1908
phylum	Chordata	Haeckel 1847
subphylum	Vertebrata	Lamarck 1801
superclass	Gnathostomata	Gegenbauer 1874
-	Osteichthyes
-	Sarcopterygii	Romer 1955
subclass	Dipnotetrapodomorpha
subclass	Tetrapodomorpha
-	Tetrapoda
-	Reptiliomorpha	Säve-Söderbergh 1934
-	Anthracosauria	Säve-Söderbergh 1934
-	Batrachosauria
-	Cotylosauria
-	Amniota	Haeckel 1866
-	Synapsida	Osborn 1903
-	Therapsida
infraorder	Cynodontia
-	Epicynodontia	Hopson and Kitching 2001
infraorder	Eucynodontia	Kemp 1982
-	Probainognathia	Hopson 1990
-	Mammaliamorpha	Rowe 1988
-	Mammaliaformes	Rowe 1988
class	Mammalia	Linnaeus 1758
-	Allotheria
order	Multituberculata	Cope 1884
suborder	Cimolodonta
family	Neoplagiaulacidae	Ameghino 1890
genus	Mesodma	Jepsen 1940

Scientific Name

Mesodma Jepsen, 1940

Name Published In

Proc. Amer. Phil. Soc., 83

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Mesodma	genus	belongs to Ptilodontidae	stated with evidence	Jepsen, 1940
Mesodma	genus	belongs to Ectypodidae	stated with evidence	Sloan and Van Valen, 1965
Mesodma	genus	belongs to Neoplagiaulacidae	stated without evidence	Clemens and Kielan-Jaworowska, 1979
Mesodma	genus	belongs to Ptilodontidae	implied	McKenna and Bell, 1997
Mesodma	genus	belongs to Neoplagiaulacidae	stated with evidence	Kielan-Jaworowska and Hurum, 2001
Mesodma	genus	belongs to Neoplagiaulacidae	stated without evidence	Kielan-Jaworowska et al., 2004

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

105 - 94 Ma
Cretaceous

Last Recorded Appearance

61.7 - 56.8 Ma
Paleocene

Environment

terrestrial (based on Mammalia)

Motility

actively mobile (based on Osteichthyes)

Diet

omnivore (based on Neoplagiaulacidae)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

G. L. Jepsen. 1940. Paleocene faunas of the Polecat Bench Formation, Park County, Wyoming. Proceedings of the American Philosophical Society 83(2):217-341

Wikipedia

https://en.wikipedia.org/wiki/Mesodma

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Halodon formosus ✝ species	accepted (GBIF) listed (PBDB)	45	83.5 Ma Late/Upper Cretaceous	66.0 Ma Late/Upper Cretaceous
Mesodma ambigua ✝ species	accepted (GBIF) listed (PBDB)	7	66.0 Ma Late/Upper Cretaceous	66.0 Ma Late/Upper Cretaceous
Mesodma hensleighi ✝ species	accepted (GBIF) listed (PBDB)	22	83.5 Ma Late/Upper Cretaceous	66.0 Ma Late/Upper Cretaceous
Ptilodus primaevus ✝ species	accepted (GBIF) listed (PBDB)	12	83.5 Ma Late/Upper Cretaceous	83.5 Ma Late/Upper Cretaceous
Mesodma pygmaea ✝ species	accepted (GBIF) listed (PBDB)	18	63.3 Ma Paleocene	61.7 Ma Paleocene
Mesodma senecta ✝ species	accepted (GBIF) listed (PBDB)	4	85.8 Ma Late/Upper Cretaceous	83.5 Ma Late/Upper Cretaceous
Mesodma thompsoni ✝ species	accepted (GBIF) listed (PBDB)	55	83.5 Ma Late/Upper Cretaceous	66.0 Ma Late/Upper Cretaceous

Synonymy List

Year	Name and Author
1940	Mesodma Jepsen
1965	Mesodma Sloan and Van Valen p. 221
1979	Mesodma Clemens and Kielan-Jaworowska p. 101
1986	Mesodma Lillegraven and McKenna p. 17
1997	Mesodma McKenna and Bell
2001	Mesodma Kielan-Jaworowska and Hurum p. 418
2004	Mesodma Kielan-Jaworowska et al. pp. 255, 334-335 fig. 8.43C
2010	Mesodma Wilson et al. p. 505
2013	Mesodma Donohue et al. p. 680

References

Jepsen G. L. (1940) Paleocene faunas of the Polecat Bench Formation, Park County, Wyoming, Proceedings of the American Philosophical Society 83 2, 217-341

Sloan R. E., Van Valen L. (1965) Cretaceous mammals from Montana, Science 148 3667, 220-227

Clemens W. A., Kielan-Jaworowska Z. (1979) Multituberculata, Mesozoic Mammals: the first two-thirds of mammalian history, 99-149

Lillegraven J. A., McKenna M. C. (1986) Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages", American Museum Novitates 2840, 1-68

McKenna M. C., Bell S. K. (1997) , Classification of Mammals Above the Species Level, 1-640

Kielan-Jaworowska Z., Hurum J. H. (2001) Phylogeny and systematics of multituberculate mammals, Palaeontology 44 3, 389-429

Kielan-Jaworowska Z., Cifelli R. L., et al (2004) Mammals from the age of dinosaurs: Origins, evolution, and structure, Columbia University Press, New York, 1-630

Wilson G. P., Dechesne M., et al (2010) New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications, Journal of Vertebrate Paleontology 30 2, 499-520

Donohue S. L., Wilson G. P., et al (2013) Latest Cretaceous multituberculates of the Black Butte Station local fauna (Lance Formation, southwestern Wyoming), with implications for compositional differences among mammalian local faunas of the Western Interior, Journal of Vertebrate Paleontology 33 3, 677-695 doi:10.1080/02724634.2013.745416

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

Proc. Amer. Phil. Soc., 83 - via The Interim Register of Marine and Nonmarine Genera

SN2000/McKenna & Bell, 1997 - via The Interim Register of Marine and Nonmarine Genera

SN2000: Brands, S. J. (compiler) 1989-2005. Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Available online at http://sn2000.taxonomy.nl/. - via The Interim Register of Marine and Nonmarine Genera

as per family - via The Interim Register of Marine and Nonmarine Genera

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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