Description Image source: Cushman, J.A. 1942. The Foraminifera of the Tropical Pacific Collections of the ”Albatross”. Part 3. Heterohelicidae to Buliminidae. Bull. U.S. Nation. Mus 161: v+67 pp.+15 pls.Author Cedhagen, TomasJPG file - 60.12 kB - 361 x 799 pixelsadded on 2011-09-21553 viewsForaminifera taxaBolivina tortuosa (Brady, 1881) accepted as Sigmavirgulina tortuosa (Brady, 1881)checked Hayward, Bruce W. 2013-08-30 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License