Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 456, Figs. 24-26: Holocene, E. Pacific, off Mexico. Edge, top, and side views of holotype, x 54 (from McCulloch, 1977).
