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Stygimys gratus

Mammalia - Multituberculata - Eucosmodontidae

Taxonomy
Eucosmodon gratus was named by Jepsen (1930). It is not extant. Its type locality is Mantua Lentil, which is in a Puercan terrestrial horizon in the Fort Union Formation of Wyoming.

It was recombined as Stygimys gratus by Sloan and Van Valen (1965), Clemens and Kielan-Jaworowska (1979) and Archibald (1982); it was recombined as Cimexomys gratus by Lofgren (1995) and Kielan-Jaworowska et al. (2004).

Synonymy list
YearName and author
1930Eucosmodon gratus Jepsen
1965Stygimys gratus Sloan and Van Valen p. 223
1979Stygimys gratus Clemens and Kielan-Jaworowska p. 102
1982Stygimys gratus Archibald
1995Cimexomys gratus Lofgren
2004Cimexomys gratus Kielan-Jaworowska et al. pp. 254, 322

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
RankNameAuthor
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Allotheria()
orderMultituberculataCope 1884
suborderCimolodonta()
familyEucosmodontidaeJepsen 1940
subfamilyEucosmodontinaeJepsen 1940
genusStygimys
speciesgratus()

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 gratus Jepsen 1930
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialc
Locomotion: actively mobilec
Life habit: arborealo
Diet: omnivoref
Created: 2005-09-11 16:54:07
Modified: 2005-09-11 18:54:07
Source: f = family, o = order, c = class, subp = subphylum
References: Gunnell et al. 1995, Hopson 1973, Jenkins and Krause 1983, Hendy et al. 2009, Carroll 1988

Age range: Puercan or 66.00000 to 63.30000 Ma

Collections (25 total)


Time interval Ma Country or state Original ID and collection number
Puercan66.0 - 63.3Canada (Saskatchewan) Cimexomys hausoi (14691 14756 14768)
Puercan66.0 - 63.3USA (Wyoming) Stygimys gratus (type locality: 14808)
Puercan66.0 - 63.3USA (Montana) Cimexomys gratus (14669 14671 14696 14698 14702 14751 14754 14759 14763 14771 14772 14773 14776 14777 14785 14787 14788 193844 231045) Cimexomys hausoi (14798) Cimexomys sp. (14741)