Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 336, Figs. 8-11: M. Jurassic (U. Callovian), Samara Bend, Caucasus. 8, Thansverse section, enlarged; 9, exterior of holotype, x 88; 10, longitudinal section, x 95 (8-10, from Bogdanovich, 1952); 11, longitudinal section, showing chamber arrangement, x 95 (from E. V. Bykova, 1948).