Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 39, Figs. 14-16: L. Carboniferous (L. Visean), E. slope of Ural Mountains, Russia. 14, Section of holotype, x 17; 15, 16, sectioned paratypes, x 17 (from Pronina, 1972).