Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 327, Figs. 8-9: Pennsylvanian, core in Dothan Limestone, Areher County, Texas, USA. Opposite sides of holotype (USNM Cushman Coll. 7686), x 122 (from Loeblich and Tappan, 1964).