Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 196, Figs. 5-7: Holocene, N. Pacific. 5, Attached side of topotype showing canaliculate wall, x 33; 6, 7, top and side views of attached topotype, x 33 (from Loeblich and Tappan, 1955).