Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 132, Figs. 1-5: Holocene, Gulf of Mexico. 1, Umbilical side, SEM, x 215; 2, spiral side, SEM, x 200; 3-5, opposite sides and edge view of holotype, x 50 (from Frerichs, 1969).
