Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 368, Fig. 6: U. Cretaceous (Maastrichtian), Qatar Peninsula, Arabia. 6, Equatorial section of holotype, x 41 (from F. R. S. Henson, 1948).