was named by Gazin (1932)
. Its type specimen is CIT 129, a partial skull ( A skull without the nasal bones, zygomatic arches and the region posterior to the postorbital processes; the incisors, third premolars, and left P4 and M1 miss), and it is a 3D body fossil. Its type locality is Skull Spring
, which is in a Barstovian terrestrial horizon in the Butte Creek Volcanic Sandstone Formation of Oregon.
It was recombined as Protospermophilus malheurensis
by Bryant (1945)
, Black (1963)
and Shotwell (1968)