Psammophaga simplora Arnold, 1982

Description:

 Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 22, Figs. 3-6: Holocene, Monterey Bay, California, USA. 3, Holotype, mononucleate, treated with hydrafluoric acid to remove mineral particles, x 168; 4, aperture of incompletely treated specimen with some ingested mineral fragments, showing simple aperture without oral capsule, x 625; 5, apertural end of untreated specimen, enlarged, showing concentration of ingested minerat particles; 6, portion of exterior enlarged, showing agglutinated particles above organic layer (from Arnold, 1982). courtesy of Michael Hesemann https://foraminifera.eu