The American species of Orthophragmina and Lepidocyclina Cushman, Joseph A. (Joseph Augustine) 1881-1949 creator author. Geological Survey (U.S.) issuing body. text bibliography dcu 1920 monographic eng remote 1 online resource (99 unnumbered pages) : illustrations. by Joseph A. Cushman. Title from title screen (viewed September 17, 2014). Report number from USGS web site. Includes bibliographical references. n-us--- Foraminifera, Fossil United States Paleontology United States Eocene Paleontology United States Oligocene Eocene Geologic Epoch Foraminifera, Fossil Oligocene Geologic Epoch Paleontology United States From 25 to 55 million years ago fast I 19.16:125-D I 19.16:125-D American species of Orthophragmina and Lepidocyclina Cushman, Joseph A. (Joseph Augustine), 1881-1949. (OCoLC)19417769 Professional paper (Geological Survey (U.S.)) ; no. 125-D Shorter contributions to general geology ; 1919 https://purl.fdlp.gov/GPO/gpo79520 COP 140926 20211120182131.0 in00003835096 eng