Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 346, Figs. 12-17: U. Cretaceous (Maastrichtian), Netherlands. 12, 17, Transverse and longitudinal sections, respectively, megalospheric, x 72; 13-15, side, edge, and top views of microspheric test, x 34; 16, enlargement of apertural area with tooth, x 100 (from Hofker, 1927).