Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 737, Figs. 1-2: Paleocene, Chicontepec Formation, EI Cristo Well no. 1, Vera Cruz State, Mexico. 1, Axial section, x 80; 2, embryonic region of equatorial section, x 80 (from Vaughan, 1929).Author Loeblich & Tappan, 1987JPG file - 93.84 kB - 552 x 277 pixelsadded on 2023-12-0448 viewsForaminifera taxaDigital photo, entire speciesActinosiphon semmesi Vaughan, 1929 †checked Le Coze, François 2023-12-04 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License