Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 346, Figs. 7-11: Miocene, Gliwice Stare, Poland. 7, 8, Side and apertural view of typical form, x 90; 9-11, opposite sides and top view of "triloculine" form, x 90 (from Luczkowska, 1972).
