PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Eumys

Mammalia - Rodentia - Cricetidae

Taxonomy

Eumys was named by Leidy (1856).

It was assigned to Cricetinae by Hay (1902); and to Cricetidae by Leidy (1856), Johnson (1966), McKenna and Bell (1997), Korth (2014), Lofgren et al. (2020), Korth et al. (2022).

Species

E. brachyodus, E. cricetodontoides (syn. E. spokanensis, E. latidens), E. elegans (syn. E. obliquidens, Coloradoeumys galbreathi, Cricetodon nebraskensis, E. pristinus), E. eliensis, E. euryodus, E. parvidens

Synonyms

Coloradoeumys was named by Martin (1980). It is not extant.

It was synonymized subjectively with Eumys by Korth (2011).

It was assigned to Cricetidae by Martin (1980), McKenna and Bell (1997).

Synonymy list

Year	Name and author
1856	Eumys Leidy
1902	Eumys Hay p. 726
1966	Eumys Johnson p. 80
1980	Coloradoeumys Martin
1997	Coloradoeumys McKenna and Bell
1997	Eumys McKenna and Bell
2014	Eumys Korth p. 386
2020	Eumys Lofgren et al.
2022	Eumys Korth et al.

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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
—	Cotylosauria	()
—	Amniota
subclass	Synapsida
—	Therapsida	()

Rank	Name	Author
infraorder	Cynodontia	()
—	Mammaliamorpha
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Euarchontoglires	Murphy et al. 2001
—	Gliriformes	Wyss and Meng 1996
—	Glires	()
—	Simplicidentata	()
order	Rodentia	Bowdich 1821
family	Cricetidae	Fischer von Waldheim 1817
genus	Eumys

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.

G. †Eumys Leidy 1856

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†Eumys brachyodus Wood 1937

†Eumys cricetodontoides White 1954

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Invalid names: Eumys latidens White 1954 [synonym], Eumys spokanensis White 1954 [synonym]

†Eumys elegans Leidy 1856

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Invalid names: Coloradoeumys galbreathi Martin 1980 [synonym], Cricetodon nebraskensis Wood 1937 [synonym], Eumys obliquidens Wood 1937 [synonym], Eumys pristinus Russell 1972 [synonym]

†Eumys eliensis Black 1961

†Eumys euryodus Korth 2011

†Eumys parvidens Wood 1937

Invalid names: Coloradoeumys Martin 1980 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Life habit:

ground dwellingo

Diet:

herbivoreo

Reproduction:

viviparoussubc

Created:

2005-08-26 14:04:46

Modified:

2005-08-26 16:04:46

Source: o = order, subc = subclass, c = class, subp = subphylum

References: Hendy et al. 2009, Carroll 1988, Lillegraven 1979, Ji et al. 2002, Nowak 1999

Age range: base of the Duchesnean to the top of the Arikareean or 39.70000 to 18.50000 Ma

Collections (51 total)

Time interval	Ma	Country or state	Original ID and collection number
Duchesnean	39.7 - 37.0	Canada (Saskatchewan)	E. sp. (16845)
Chadronian	37.0 - 33.9	Canada (Saskatchewan)	E. sp. (16979)
Chadronian	37.0 - 33.9	USA (Colorado)	E. sp. (16977)
Chadronian	37.0 - 33.9	USA (Montana)	E. spokanensis (16925)
Late/Upper Chadronian	37.0 - 33.9	Canada (Saskatchewan)	E. elegans (16981)
Late/Upper Chadronian - Orellan	37.0 - 31.8	USA (Nebraska)	E. elegans (230806)
Orellan	33.9 - 31.8	USA (Montana)	E. brachyodus, E. parvidens, E. elegans (17090) E. cricetodontoides (17074 17154) E. elegans (17137) E. obliquidens (17109) E. sp. (17138)
Orellan	33.9 - 31.8	USA (Colorado)	E. elegans (17081 17082 17083)
Orellan	33.9 - 31.8	USA (South Dakota)	E. elegans (17061 17094 17102 17173 17174) E. sp. (17187 17188 17189 17190 17198) E. sp., E. elegans (17115)
Orellan	33.9 - 31.8	USA (North Dakota)	E. elegans (17100) E. obliquidens (17301)
Orellan	33.9 - 31.8	USA (Wyoming)	E. elegans (17106 17318)
Orellan	33.9 - 31.8	Canada (Saskatchewan)	E. elegans (17055 17111)
Orellan	33.9 - 31.8	USA (Nebraska)	E. elegans (17108 17164) E. parvidens, Cricetodon nebraskensis (17150)
Whitneyan	31.8 - 29.5	USA (North Dakota)	E. sp. (17320)
Whitneyan	31.8 - 29.5	USA (Colorado)	E. brachyodus (17426)
Whitneyan	31.8 - 29.5	USA (Montana)	E. elegans (230863)
Whitneyan	31.8 - 29.5	USA (South Dakota)	E. brachyodus (170168) E. sp. (17338 17357 17358 17384 17385) E. sp., E. brachyodus (17337) E. sp., E. brachyodus, E. elegans (17336)
Whitneyan	31.8 - 29.5	USA (Nebraska)	E. brachyodus (17331)
Whitneyan	31.8 - 29.5	Canada (Saskatchewan)	E. brachyodus (17372)
Arikareean	29.5 - 18.5	USA (Wyoming)	E. sp. (17666)
Arikareean	29.5 - 18.5	USA (Nebraska)	E. brachyodus (17567)
Arikareean	29.5 - 18.5	USA (Montana)	E. eliensis (17509)