TY - JOUR A1 - Collins, R. L. JO - Johns Hopkins University Studies in Geology 11: 137-234 TI - A monograph of the American Tertiary pteropod mollusks UR - https://marinespecies.org/carms/aphia.php?p=sourcedetails&id=332015 PY - 1934 Y2 - 2024-03-28 ER -