Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 256, Figs. 5,6: L. Carboniferous (L. Visean). 5, 6, Bashkortostan; 5, Axial section, x 50; 6, sagittal section, x 50 (from Chemysheva, 1948).