Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 140, Figs. 19-21: U. Cretaceous, Ukraine. Apertural view, side, and edge views of holotype, enlarged (from Reuss, 1851).