Description Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 800, Figs. 7-10: U. Eocene, Matansa Limestone, Saipan, Mariana Islands, Pacific. 7, 9, Median sections, x 16; 8, transverse section of umbonate specimen, x 20; 10, transverse section, x 20 (7, 9, from Cole and Bridge, 1953; 8, 10, from Cole, 1957).Author Loeblich & Tappan, 1987JPG file - 155.85 kB - 567 x 477 pixelsadded on 2023-12-04103 viewsForaminifera taxaDigital photo, entire speciesBiplanispira mirabilis (Umbgrove, 1936) †checked Le Coze, François 2023-12-04 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License