Full reference: K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100
Sister taxon: Pseudopermophorus uedai
Type specimen: USNM 140506, a shell (Bivalved). Its type locality is Hidden Pastures (Franson Mb), Big Sheep Canyon, Beaverhead County, which is in a Wordian shallow subtidal limestone in the Park City Formation of Montana.
Average measurements (in mm): shell 61.8 x 14.6, valve length 53.6