Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 148, Figs. 1-3: Cretaceous, U. Cenomanian, S. England. 1, Dissected specimen showing radial partitions and chamberlets, x 33; 2, 3, side and apertural views of exterior, x 48 (from Barnard and Banner, 1980).
