MolluscaBase name details
original description
Weaver, C. E.; Palmer, K. V. W. (1922). Fauna from the Eocene of Washington. <em>University of Washington Publications in Geology.</em> 1(3): 1-56, pls 8-12., available online at https://www.biodiversitylibrary.org/page/17201643
page(s): 36, pl. 11, figs 10, 22 [details]