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Marmota nevadensis

Mammalia - Rodentia - Sciuridae

Taxonomy
Arctomys nevadensis was named by Kellogg (1910). Its type specimen is UCMP 12506, a mandible (The anterior part of a left mandibular ramus with a broken lower incisor; p4 and m1 intact.), and it is a 3D body fossil. Its type locality is Thousand Creek Formation, which is in a Hemphillian terrestrial horizon in the Thousand Creek Formation of Nevada.

It was recombined as Marmota nevadensis by Wilson (1937), Bryant (1945) and Black (1963); it was recombined as Paenemarmota nevadensis by Korth (1994), Martin (1998) and Kelly (2000).

Sister species lacking formal opinion data
M. bobak, M. sibirica

Synonymy list
YearName and author
1910Arctomys nevadensis Kellogg
1937Marmota nevadensis Wilson
1945Marmota nevadensis Bryant p. 363
1963Marmota nevadensis Black
1994Paenemarmota nevadensis Korth
1998Paenemarmota nevadensis Martin
2000Paenemarmota nevadensis Kelly

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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
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
RankNameAuthor
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentiaBowdich 1821
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusMarmotaFrisch 1775
speciesnevadensis()

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.

†Marmota nevadensis Kellogg 1910
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Diagnosis
ReferenceDiagnosis
M. D. Bryant 1945Ramus larger and relatively stouter than that of other Nearctic species of Marmota. Masseteric fossa not clearly delimited anteriorly and terminates below m1. p4 and m1 nearly rhomboidal in occlusal view; protoconulid on p4 minute and closely appressed to protoconid.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: semifossorialg
Diet: granivoref
Diet 2: frugivoref
Reproduction: viviparoussubc
Created: 2012-05-15 12:43:47
Modified: 2012-05-14 21:43:47
Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Samuels and Van Valkenburgh 2008, Nowak 1991, Ji et al. 2002, Carroll 1988, Lillegraven 1979

Age range: Hemphillian or 10.30000 to 4.90000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Hemphillian10.3 - 4.9USA (Nevada) Marmota nevadensis (type locality: 19095)
Late/Upper Hemphillian10.3 - 4.9USA (Nebraska) Paenemarmota nevadensis (18247)