original description
Stephenson, L. (1953). Mollusks from the Pepper shale member of the Woodbine formation, McLennan County, Texas. <em>United States Geological Survey Professional Paper.</em> 274-C: 57-67, pl. 13., available online at https://doi.org/10.3133/pp243e [details] Available for editors [request]
From editor or global species database