Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 245, Figs. 8-9: L. Carboniferous (M. Visean), USSR. 8, Slightly oblique equatorial section, x 45; 9, axial section of holotype, x 45 (from Rauzer-Chernousova, 1948).