original description
Pierce, H.G.; Rasmussen, D.L. (1992). The nonmarine mollusks of the Late Oligocene-Early Miocene Cabbage Patch fauna of western Montana. I. Geologic setting and the family Pupillidae (Pulmonata: Stylommatophora). <em>Journal of Paleontology.</em> 66(1): 39-52.
page(s): 44-45, figs 3.2, 3.4, 4.5-4.7 [details] Available for editors [request]
From editor or global species database
Type locality KU-MT-21. Tavenner Ranch locality 2, SWSW 1/4, sec. 11, T8N, R10W, Powell County, Montana. Locality in southeast-facing exposure south of irrigation canal and at west end of saddle on drainage divide between Rock Creek and Mullan Creek. [details]