Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 436, Figs. 10-11: L. Jurassic (U. Lias), Germany. Side and top views of topotype, x 74 (from Loeblich and Tappan, 1964).
