Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 260, Figs. 12-14: Saurin. U. Permian (Murgabian), Cambodia. 12, Inner whorls of axial section, about x 100; 13, subaxial section, about x 100; 14, subsagittal section, x 85 (both 13 and 14 were indicated as "holotype" in the original publication; from Saurin, 1962). courtesy of Michael Hesemann https://foraminifera.eu