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Spermophilus primitivus Bryant 1945 (ground squirrel)

Mammalia - Glires - Sciuridae

PaleoDB taxon number: 51714

Alternative combinations: Citellus primitivus, Otospermophilus primitivus

Full reference: M. D. Bryant. 1945. Phylogeny of Nearctic Sciuridae. American Midland Naturalist 33(2):257-390

Belongs to Spermophilus according to W. W. Korth 1994

Sister taxa: Spermophilus armatus, Spermophilus beecheyi, Spermophilus boothi, Spermophilus cochisei, Spermophilus columbianus, Spermophilus cragini, Spermophilus cyanocittus, Spermophilus dotti, Spermophilus elegans, Spermophilus finlayensis, Spermophilus franklinii, Spermophilus fricki, Spermophilus howelli, Spermophilus jerae, Spermophilus johnstoni, Spermophilus lateralis, Spermophilus lorisrusselli, Spermophilus matachicensis, Spermophilus matthewi, Spermophilus mcgheei, Spermophilus mckayensis, Spermophilus meadensis, Spermophilus meltoni, Spermophilus mexicanus, Spermophilus parryii, Spermophilus rexroadensis, Spermophilus richardsonii, Spermophilus russelli, Spermophilus shotwelli, Spermophilus spilosoma, Spermophilus superciliosus, Spermophilus taylori, Spermophilus townsendii, Spermophilus tridecemlineatus, Spermophilus tuitus, Spermophilus variegatus, Spermophilus wellingtonensis, Spermophilus wilsoni, Citellus ridgwayi, Citellus (Otospermophilus) gidleyi, Citellus (Otospermophilus) argonautus, Citellus (Otospermophilus) bensoni

Type specimen: CM 746, a mandible (A right mandibular ramus with a broken incisor, worn cheek teeth, and the basal portion of the vertical ramus)

Ecology: scansorial insectivore

Average measurements (in mm): m1 1.88 x 2.25