Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 130, Figs. 19-20: Holocene, Tutuila, Samoa. Opposite sides and edge view of holotype, x 118 (Loeblich and Tappan, 1955).
