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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 siltstone in the Rattlesnake Formation of 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).

Sister species lacking formal opinion data
C. major, C. parryi, C. primigenius, C. superciliosus, C. tridecemlineatus, C. xanthoprymnus

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

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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
genusCitellusBrandt 1844
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.

†Citellus (Otospermophilus) gidleyi Merriam et al. 1925
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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.