Otospermophilus variegatus grammurus Helgen et al. 2009 (rock squirrel)
Mammalia - Rodentia - Sciuridae
Alternative combinations: Citellus grammurus, Otospermophilus grammurus, Sciurus grammurus
Full reference: K. M. Helgen, F. R. Cole, L. E. Helgen and D. E. Wilson. 2009. Generic revision in the Holarctic ground aquirrel genus Spermophilus. Journal of Mammalogy 90(2):270-205
Belongs to Otospermophilus variegatus according to K. M. Helgen et al. 2009
See also Ayer 1936 and Schultz and Howard 1935
Sister taxa: none
Distribution:
• Quaternary of United States (2: New Mexico, Texas collections)
Total: 2 collections each including a single occurrence