Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 20, Figs. 8-10: Silurian, Gotland Island. 8, Irregular form, x 40; 9, hemispherical specimen, x 58 (both from Eisenack, 1932); 10, neotype, x 67 (from Eisenack, 1954).Author Le Coze, FrançoisJPG file - 27.17 kB - 206 x 217 pixelsadded on 2023-07-1981 viewsForaminifera taxaBlastammina polymorpha Eisenack, 1932 †checked Le Coze, François 2023-07-19 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License