Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 337, Figs. 5-7: Holocene, Mediterranean; opposite sides and apertural view, enlarged, magnification not given; 8-11, Pliocene, Castel'Arquato, ltaly; 8-10, opposite sides and apertural view of lectotype, a two-chambered individual (MNHN, Paris), x 36; 11, paratype consisting only of proloculus (MNHN, Paris), x 36; 12, transverse section of megalospheric test, x 63 (5-7, 12, from Schlumberger, 1886; 8-11, from Loeblich and Tappan, 1964).
