Tritaxia tricarinata (Reuss 1844)

Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification.  Van Nostrand, Reinhold Co. New York 1728 pp. Plate 145, Figs. 1-3: U. Cretaceous. 1, 2, Bohemia, Czechoslovakia, side and top views of topotype, x 58 (from Loeblich and Tappan, 1964); 3, England, abraded specimen showing internal tube in final chamber, x 24 (from Barnard and Banner, 1953).

Image source: Cushman, J.A. 1921. Foraminifera of the Philippine and adjacent seas. Bull. U.S. Natl. Mus. 100(4).

Image source: Cushman, J.A. 1911. A Monograph of the Foraminifera of the North Pacific Ocean. Part II. Textulariidae. Bull. U.S. Nation. Mus 71: xiii+108 pp.