Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 446, Figs. 16-19: L. Cretaceous, Dagestan, Russia. 16, 17, Barremian, Alikent; 18, 19, L. Aptian. 16, 17, Face and side views of holotype, x 40; 18, 19, face and side views, x 40 (from Samyschkina, 1983).