MolluscaBase name details
original description
Olsson A.A. (1931). Contribution to the Tertiary paleontology of northern Peru: part 4, the Peruvian Oligocene. <em>Bulletins of American Paleontology.</em> 17(63): 97-264 [1-168], pls 13-33., available online at https://www.biodiversitylibrary.org/page/32443892
page(s): 180, pl. 16 figs 1, 5, 8-10 [details]