@article{MolluscaBase:SourceID:135770, author = {Emerson, W. K. & Hertlein, L. G.}, journal = {Transactions of the San Diego Society of Natural History}, issue = {17}, pages = {333-368}, title = {Invertebrate megafossils of the Belvedere Expedition to the Gulf of California}, url = {https://www.biodiversitylibrary.org/page/4329315}, volume = {13}, year = {1964} }