PBDB Taxon

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Stygimys kuszmauli

Mammalia - Multituberculata - Eucosmodontidae

Taxonomy

Stygimys kuszmauli was named by Sloan and Van Valen (1965). Its type specimen is U.M.V.P. 1478, a mandible (left lower jaw fragment with I and alveoli for P4 and M1), and it is not a trace fossil. Its type locality is Bug Creek Anthills, which is in a Puercan terrestrial horizon in the Hell Creek Formation of Montana. It is the type species of Stygimys.

Synonyms

Stygimys cupressus was named by Fox (1989). Its type specimen is UALVP 22767, a tooth (left p4), and it is a 3D body fossil. Its type locality is Long Fall Horizon, Rav W-1, which is in a Puercan fine channel fill siliciclastic in the Ravenscrag Formation of Canada.

It was synonymized subjectively with Stygimys kuszmauli by Lofgren et al. (2005).

Synonymy list

Year	Name and author
1965	Stygimys kuszmauli Sloan and Van Valen p. 223
1979	Stygimys kuszmauli Clemens and Kielan-Jaworowska p. 102
1989	Stygimys cupressus Fox p. 43
2004	Stygimys cupressus Kielan-Jaworowska et al. pp. 255, 330
2004	Stygimys kuszmauli Kielan-Jaworowska et al. pp. 255, 330
2005	Stygimys kuszmauli Lofgren et al. p. 79

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967

Rank	Name	Author
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Allotheria	()
order	Multituberculata	Cope 1884
suborder	Cimolodonta	()
family	Eucosmodontidae	Jepsen 1940
subfamily	Eucosmodontinae	Jepsen 1940
genus	Stygimys
species	kuszmauli

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Stygimys kuszmauli Sloan and Van Valen 1965

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Invalid names: Stygimys cupressus Fox 1989 [synonym]

Diagnosis

Reference	Diagnosis
R. C. Fox 1989 (Stygimys cupressus)	A species of Stygimys in which the cutting edge of p4 is developed as a relatively symmetrical arc in profile, and having a long low, inclined anterior edge leading to the first serration.