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Fischerina communis sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 114
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Image source: Cushman, J.A. 1932. The Foraminifera of the Tropical Pacific Collections of the ”Albatross”. Part I. Astrorhizidae to Trochamminidae. Bull. U.S. Nation. Mus 161: vi+88 pp.+17 pls.