Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 371, Figs. 1,3-4: L. Eocene, Guatemala. 1, Median section of lectotype, x 50; 3, transverse section of uncoiled chamber, x 50; 4, axial section, x 50 (from De Castro, 1971).