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Spermophilus primitivus

Osteichthyes - Rodentia - Sciuridae

Taxonomy
Citellus primitivus was named by Bryant (1945). Its type specimen is CM 746, a mandible (A right mandibular ramus with a broken incisor, worn cheek teeth, and the basal portion of the vertical ramus), and it is a 3D body fossil.

It was recombined as Otospermophilus primitivus by Barnosky (1986); it was recombined as Spermophilus primitivus by Bryant (1945), Hemming (1956), Shotwell (1968), Wilson and Reeder (1993), Korth (1994).

Synonymy list
YearName and author
1945Citellus primitivus Bryant
1945Spermophilus primitivus Bryant
1945Citellus primitivus Bryant p. 352 figs. P1. 7, Fig. e
1956Spermophilus primitivus Hemming
1963Citellus primitivus Black
1968Spermophilus primitivus Shotwell
1986Otospermophilus primitivus Barnosky
1993Spermophilus primitivus Wilson and Reeder
1994Spermophilus primitivus Korth

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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()
orderRodentiaBowdich 1821
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusSpermophilusCuvier 1825
speciesprimitivus()

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.

†Spermophilus primitivus Bryant 1945
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Diagnosis
No diagnoses are available
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 10:05:16
Modified: 2012-05-14 21:55:07
Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Fernández et al. 2000, Ji et al. 2002, Nowak 1991, Lillegraven 1979

Age range: Barstovian or 16.30000 to 12.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Barstovian16.3 - 12.5USA (Wyoming) Spermophilus primitivus (18990)
Barstovian16.3 - 12.5USA (Montana) Citellus primitivus (18894)