original description
Olsson, A. A. (1961). Mollusks of the tropical eastern Pacific, particularly from the southern half of the Panamic-Pacific faunal province (Panama to Peru). Panamic-Pacific Pelecypoda. Paleontological Research Institution, Ithaca. 574 pp, 86 pl., available online at http://www.biodiversitylibrary.org/item/29909
page(s): 158-159, pl. 20, fig. 3-3c, pl. 21, fig. 3, 3a [details]
From editor or global species database
Type locality Santa Elena, Ecuador [details]