Partial right mandible with p4, m1, and m2 in place.
Mammalia: Rodentia: Cylindrodontidae
RAM locality V200130 (Sioux County, Nebraska)
Chadronian NALMA: Late Eocene
Hough, J., and R. Alf. 1956. A Chadron mammalian fauna from Nebraska. Journal of Paleontology 30:132-140.
Current Taxonomic Status
The specimen number was given as “Webb School Museum No. 108” (which was misprinted as Webb School Museum No. 1908 in the caption for figures 1 and 2, p. 133) by Hough and Alf (1956).