Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 77, Figs. 4-6: U. Cretaceous (Cenomanian), Sinai, Egypt. 4, Side view of exterior, x 87; 5, apertural views of holotype showing slitlike aperture with broadened base forming an inverted Y, x 100; 6, equatorial section viewed in polarized light, x 110 (from El-Dakkak, 1974).