Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 324, Fig. 10: M. Triassic (Anisian), Czechoslovakia. Longitudinal section of holotype, x 58 (from Salaj et al., 1983). courtesy of Michael Hesemann https://foraminifera.eu