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Thomomys potomacensis

Osteichthyes - Rodentia - Geomyidae

Taxonomy
Plesiothomomys potomacensis was named by Gidley and Gazin (1933). Its type specimen is USNM 8166, a mandible, and it is a 3D body fossil. Its type locality is Cumberland Cave, which is in an Irvingtonian cave horizon in Maryland.

It was recombined as Thomomys potomacensis by Kurten and Anderson (1980), Eshelman et al. (2025).

Sister species lacking formal opinion data
T. leucodon, T. taloides
Entered
by J. Alroy on 2003-01-23; modified by M. Uhen on 2013-10-27

Synonymy list
YearName and author
1933Plesiothomomys potomacensis Gidley and Gazin p. 354
1980Thomomys potomacensis Kurten and Anderson p. 224
2025Thomomys potomacensis Eshelman et al. p. 98

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
infraorderCastorimorpha
superfamilyGeomyoideaBonaparte 1845
familyGeomyidaeBonaparte 1845
genusThomomysWied-Neuwied 1839
speciespotomacensis()

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.

†Thomomys potomacensis Gidley and Gazin 1933
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: fossorialg
Diet: browserf
Reproduction: viviparoussubc
Created: 2012-05-15 11:11:47
Modified: 2012-05-14 21:58:33
Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum
References: Nowak 1991, Lillegraven 1979, Ji et al. 2002, Carroll 1988, Hendy et al. 2009, Stein 2000

Age range: Irvingtonian or 1.40000 to 0.21000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Pleistocene2.58 - 0.0117USA (West Virginia) Thomomys potomacensis (123875)
Irvingtonian1.4 - 0.21USA (West Virginia) Thomomys potomacensis (20554)
Irvingtonian1.4 - 0.21USA (Maryland) Plesiothomomys potomacensis, Thomomys potomacensis (type locality: 20302)
Irvingtonian1.4 - 0.21USA (Pennsylvania) Thomomys potomacensis (20354)