@article{MSBIAS:SourceID:332015, author = {Collins, R. L.}, journal = {Johns Hopkins University Studies in Geology 11: 137-234}, title = {A monograph of the American Tertiary pteropod mollusks}, url = {https://marinespecies.org/msbias/aphia.php?p=sourcedetails&id=332015}, year = {1934} }