Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 396, Figs. 1, 3: U. Cretaceous (L. Campanian), France; 1, Landiras; 3, Roquefort, Dept. Landes. 1, transverse section parallel to the axis showing minute chamberlets, x 6.3; 3, side view of holotype, x 7.5 (from H. Douvillé, 1902). courtesy of Michael Hesemann https://foraminifera.eu