Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 300, Figs. 1-4: Permian (Kungurian), Guadalupian, Upper Carniola region of Slovenia. 1, Sagittal section, x 40; 2, sagittal section, x 20; 3, axial section of microspheric holotype, x 40; 4, axial section of megalospheric test, x 20 (from Kochansky-Devidé and Ramovš, 1955). courtesy of Michael Hesemann https://foraminifera.eu
