Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 228, Figs 5-8: L. Carboniferous (Dinantian), Germany. 5, Holotype, side view, x 55; 6, section later prepared of same, x 50; 7, drawing to show structure, x 50; 8, drawing of sectioned paratype, x 50 (from Eickhoff, 1968).