Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 438, Figs. 16-20: U. Cretaceous (Maastrichtian), Meudon, France. Back view, side, top, front, and opposite sides, x 40 (from Marie, 1941).