Citellus ridgwayi Gazin 1932 (ground squirrel)

Mammalia - Rodentia - Sciuridae

Full reference: C. L. Gazin. 1932. A Miocene Mammalian Fauna From South-Eastern Oregon. Carnegie Institution of Washington Publication 418(3):37-86

Belongs to Citellus according to M. D. Bryant 1945

See also Barnosky 1986, Black 1963, Gazin 1932, Korth 1994, Shotwell 1968 and Wilson and Reeder 1993

Sister taxa: Spermophilus armatus, Spermophilus boothi, Spermophilus cochisei, Spermophilus columbianus, Spermophilus cragini, Spermophilus cyanocittus, Spermophilus dotti, Spermophilus finlayensis, Spermophilus fricki, Spermophilus howelli, Spermophilus jerae, Spermophilus johnstoni, Spermophilus lorisrusselli, Spermophilus matachicensis, Spermophilus matthewi, Spermophilus mcgheei, Spermophilus mckayensis, Spermophilus meadensis, Spermophilus meltoni, Spermophilus primitivus, Spermophilus rexroadensis, Spermophilus russelli, Spermophilus shotwelli, Spermophilus spilosoma, Spermophilus superciliosus, Spermophilus taylori, Spermophilus tridecemlineatus, Spermophilus tuitus, Spermophilus wellingtonensis, Spermophilus wilsoni

Type specimen: CIT 334, a partial skull (The facial region of the skull, including most of the right zygomatic arch and all of the teeth except the right P3; the incisors are broken at the alveoli). Its type locality is Skull Spring, which is in a Barstovian terrestrial volcaniclastic in the Butte Creek Formation of Oregon.

Ecology: semifossorial granivore-frugivore

Distribution: found only at Skull Spring

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