Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 265, figs. 1-5: U. Permian (Murgabian), central Turkey. 1, Axial section of holotype, x 40; 2, 3, sagittal sections, x 40; 4, 5, central part of two axial sections, enlarged, x 100 (from Skinner, 1969).