Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 470, Figs. 12-13: Holocene, Pacific, off Mexico, at 92 m. Side and basal views of holotype, x 130 (from McCulloch, 1977).