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

Citellus (Otospermophilus) gidleyi

Mammalia - Rodentia - Sciuridae

Taxonomy
Citellus gidleyi was named by Merriam et al. (1925). Its type specimen is UCMP 26793, a mandible (A part of a left mandibular ramus without the anterior tip and the vertical ramus, all of the cheek teeth well preserved), and it is a 3D body fossil. Its type locality is Rattlesnake, which is in a Hemphillian terrestrial horizon in Oregon.

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

Synonymy list
YearName and author
1925Citellus gidleyi Merriam et al.
1945Citellus (Otospermophilus) gidleyi Bryant p. 353
1956Spermophilus gidleyi Hemming
1963Citellus gidleyi Black
1968Spermophilus gidleyi Shotwell
1986Otospermophilus gidleyi Barnosky
1993Spermophilus gidleyi Wilson and Reeder
1994Spermophilus gidleyi Korth

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

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
RankNameAuthor
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusCitellusCuvier 1825
subgenusOtospermophilus
speciesgidleyi()

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.

Diagnosis
ReferenceDiagnosis
M. D. Bryant 1945The mandibular ramus smaller and mandibular tooth row shorter than in Recent species of Olospermophilus. Notches between protoconids and parametaconids shallow; ectolophids submarginal; distinct mesostylids on m1 and m2; ectotylids on all molars; talonid basins shallow.