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

Citellus (Otospermophilus) pattersoni

Osteichthyes - Rodentia - Sciuridae

Taxonomy
Citellus pattersoni was named by Wilson (1949). Its type specimen is LACM (CIT) 3547, a maxilla (right P4-M3), and it is a 3D body fossil. Its type locality is Matachic, which is in a Hemphillian terrestrial horizon in Mexico.

It was recombined as Spermophilus pattersoni by Hemming (1956), Shotwell (1968), Wilson and Reeder (1993), Korth (1994); it was recombined as Citellus (Otospermophilus) pattersoni by Black (1963); it was recombined as Otospermophilus pattersoni by Barnosky (1986); it was recombined as Parapaenemarmota pattersoni by Martin (1998).

Sister species lacking formal opinion data
C. beecheyi, C. beecheyi, C. citelloides, C. major, C. parryi, C. polonicus, C. primigenius, C. spilosoma, C. superciliosus, C. tridecemlineatus, C. undulatus, C. xanthoprymnus, C. citelloides, C. superciliosus, C. undulatus
Entered
by J. Alroy on 2003-01-23; modified by J. Marcot on 2026-05-27

Synonymy list
YearName and author
1949Citellus pattersoni Wilson p. 170 figs. Plate 2, figure 4
1956Spermophilus pattersoni Hemming
1963Citellus (Otospermophilus) pattersoni Black p. 215 figs. Plate 22, figure 2
1968Spermophilus pattersoni Shotwell
1986Otospermophilus pattersoni Barnosky
1993Spermophilus pattersoni Wilson and Reeder
1994Spermophilus pattersoni Korth
1998Parapaenemarmota pattersoni Martin

Is something missing? Join the Paleobiology Database and enter the data

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()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusCitellusBrandt 1844
subgenusOtospermophilus
speciespattersoni(Wilson 1949)

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.

show all | hide all
Diagnosis
ReferenceDiagnosis
R. W. Wilson 1949Similar in general to primitive species of Citellus except for its somewhat higher crowns, but distinguished from all known members of the genus Ly its greater size. Parastyle ridge of P4 relatively well developed.
C. C. Black 1963Largest known species of genus; metaloph strong on M3.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialf
Diet: granivoref
Diet 2: frugivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:04:24
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Hendy et al. 2009, Lillegraven 1979, Nowak 1991, Carroll 1988

Age range: Late/Upper Hemphillian or 9.40000 to 4.70000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Hemphillian9.4 - 4.7Mexico (Chihuahua) Spermophilus pattersoni (type locality: 18734 18755)