Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 145, Figs. 4-5: U. Cretaceous, Craie Blanche, St. Germain, France. Opposite sides, enlarged (from d'Orbigny, 1840).