@inbook{WoRMS:SourceID:131997, author = {Olsson, A. A.}, title = {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}, url = {http://www.biodiversitylibrary.org/item/29909}, year = {1961} }