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Image source: Höglund, H. 1947. Foraminifera in the Gullmar fjord and the Skagerak. Zoologiska Bidrag från Uppsala 26: 1-328 + 32 pls. Uploaded with written permission from the copyright owners Annalena Höglund and Jan Höglund.
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Image source: Höglund, H. 1947. Foraminifera in the Gullmar fjord and the Skagerak. Zoologiska Bidrag från Uppsala 26: 1-328 + 32 pls. Uploaded with written permission from the copyright owners Annalena Höglund and Jan Höglund.
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Image source: Höglund, H. 1947. Foraminifera in the Gullmar fjord and the Skagerak. Zoologiska Bidrag från Uppsala 26: 1-328 + 32 pls. Uploaded with written permission from the copyright owners Annalena Höglund and Jan Höglund.
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Image source: Höglund, H. 1947. Foraminifera in the Gullmar fjord and the Skagerak. Zoologiska Bidrag från Uppsala 26: 1-328 + 32 pls. Uploaded with written permission from the copyright owners Annalena Höglund and Jan Höglund.
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Robertina subcylindrica sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 50
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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.
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Image source: Cushman, J.A. 1931. The Foraminifera of the Atlantic Ocean. Part 8. Rotaliidae, Amphisteginidae, Calcarinidae, Cymbaloporettidae, Globorotaliidae, Anomalinidae, Planorbulinidae, Rupertiidae and Homotremidae. Bull. U.S. Natl. Mus. 104.
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Image source: Cushman, J.A. 1931. The Foraminifera of the Atlantic Ocean. Part 8. Rotaliidae, Amphisteginidae, Calcarinidae, Cymbaloporettidae, Globorotaliidae, Anomalinidae, Planorbulinidae, Rupertiidae and Homotremidae. Bull. U.S. Natl. Mus. 104.
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Palmer, D. K.; Bermúdez, P. J. (1936). Late Tertiary foraminifera from the Matanzas Bay region, Cuba. Memorias de la Sociedad. Cubana de Historia Natural ''Felipe Poey". v. 9, p. 237–257., available online at (http://www.redciencia.cu/geobiblio/paper/1936_PJBermudez__Late%20terc%20foram%20matanzas%20Cuba.pdf) page(s): p. 253 pl. 22 fig. 1-3, 5
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Palmer, D. K.; Bermúdez, P. J. (1936). Late Tertiary foraminifera from the Matanzas Bay region, Cuba. Memorias de la Sociedad. Cubana de Historia Natural ''Felipe Poey". v. 9, p. 237–257., available online at (http://www.redciencia.cu/geobiblio/paper/1936_PJBermudez__Late%20terc%20foram%20matanzas%20Cuba.pdf) page(s): p. 253 pl. 22 fig. 1-3, 5
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Robertinoides oceanicus sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 50
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Lamarckina ventricosa sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 91
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Image source: Cushman, J.A. 1931. The Foraminifera of the Atlantic Ocean. Part 8. Rotaliidae, Amphisteginidae, Calcarinidae, Cymbaloporettidae, Globorotaliidae, Anomalinidae, Planorbulinidae, Rupertiidae and Homotremidae. Bull. U.S. Natl. Mus. 104.
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Geminospira bradyi sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 113
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Description.Test trochospiral, unequally biconvex, subcircular in outline recognized easily by its clear wall showing a cloudy mottling under a light microscope; spiral side evolute, slightly convex; umbilical side involute, more strongly convex; peripheral margin strongly keeled; on the spiral side, sutures flush, indistinct, obscured by irregularly distributed, low tubercles; on the umbilical side, 7-9 somewhat inflated chambers with depressed and nearly radiate sutures; wall finely perforated on both sides; apertural face truncate, with an acute, nearly keeled border; aperture one or two small openings at the base of the apertural chamber and a long slit-like peripheral opening parallel to the margin and provided with a prominent inner lip, still visible on the last 3 or 4 chambers.