Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 224, Figs. 7-9: U. Permian, Changzing Limestone, China. 7, Longitudinal section of paratype, x 20; 8, holotype, x 35; 9, paratype, x 30 (from J. X. Lin, 1980).
