Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 352, Figs. 1-5: M. Miocene (Tortonian), Niskowa, Poland. 1-3, Opposite sides and apertural view of holotype, x 147; 4, 5, side and top views of paratype, x 147 (from Luczkowska, 1972). courtesy of Michael Hesemann https://foraminifera.eu
