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The wall of this foram includes a thick inner organic lining (IOL) underlying the agglutinated layer (A). The cell body is at lower right. Image courtesy of Susan T. Goldstein, University of Georgia. This image first appeared in J. Foram Res. 32:375-383 and is used with permission.
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Tholosina species attach to surfaces and build an agglutinated dome over the cell body. The dome is more "inflated" looking than the ones produced by their apparent relatives, the genus Hemisphaerammina. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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This foram was collected from a salt marsh on Sapelo Island, Georgia. The species name is due to this foram's habit of agglutinating fine, light-colored particls; it appears white under the light microscope. Image courtesy of Susan T. Goldstein, University of Georgia. This image first appeared in J. Foram Res. 32:375-383 and is used with permission.
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This view shows the inside of the dome-shaped test. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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This image shows the foram's reticulopodia (the elaborate branching pseudopodia sticking out of the vase-like hole in the test). Reticulopods are the defining morphological characteristic of the Granuloreticulosea as a group. Image courtesy of Susan T. Goldstein, University of Georgia.
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This giant Antarctic foraminiferan is often several millimeters across. Notice the two large projections (called stolons. In this species, the reticulopodia emerge from the ends of the stolons. Image courtesy of Samuel S. Bowser, Wadsworth Center.
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Psammophaga species are noted for taking sand grains into their bodies; the genus name means "sand eater" in Greek. You can see the coarse quartz sand through the translucent walls of the foram's test. Image courtesy of Susan T. Goldstein, University of Georgia.
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A live cell in its native environment. Notice that the foram has selected two discrete sizes of sand grains to make its test, and does not use the other sizes available to it. Photo courtesy of Robert Sanders. More information about this image is available at the
McMurdo Sound Underwater Field Guide.
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Top: Reflected-light image of three individuals of the species, showing size variation. The white color is caused by a very fine layer of sand particles (probably quartz) that the foram glues to its outer surface. Bottom: A slightly higher-magnification transmitted-light image, with the nucleus clearly visible. Length of this specimen: approximately 600 um. Image courtesy of Andrew J. Gooday, Southampton Oceanography Centre.
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This darkfield image shows the reticulopodial network (blue fibers); the cell body is the dark circular mass at lower left. Image courtesy of Samuel S. Bowser, Wadsworth Center.
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This image clearly shows the fine grains that make up the test surface. Inset: a closeup of the aperture. Image courtesy of Andrew J. Gooday, Southampton Oceanography Centre.
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An SEM of part of the reticulopodial network. A. rara reticulopods are unusually strong, capable of trapping and rending juvenile arthropods and echinoderms. Image courtesy of Samuel S. Bowser, Wadsworth Center.
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A closeup of the opening. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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"Lagena" is a Latin word meaning "flask". This flask-shaped foram was found in the Oslofjord, Norway. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 24, Figs. 12-14: U . Silurian (Ludlovian), Austria. Top, edge, and base of holotype, x 76 (from Kristan-Tollmann, 1971). courtesy of Michael Hesemann https://foraminifera.eu
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Technitella sp.nov. sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 25
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Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 16, Fig. 4: Holocene, Arctic Ocean. Side view, x 28 (from Averintsev, 1911). courtesy of Michael Hesemann https://foraminifera.eu
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Lagenammina arenulata sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 30
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Lagenammina difflugiformis sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 30
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Image source: Cushman, J.A. 1918. The Foraminifera of the Atlantic Ocean. Part I. Astrorhizidae. Bull. U.S. Natl. Mus. 104.
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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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Specimens were isolated from surface sediments samples collected in Kongsfjorden, Isfjorden and Adventfjorden during the cruise of r/v « Oceania » between 22 July and 2 August 2004. The sediment samples were sieved at 500 um and 125 um sized meshes, and living specimens were picked under dissecting microscope on board. The specimens were photographed, measured and fixed for further DNA extraction. Source: http://www.iopan.gda.pl/projects/biodaff/EMBS-06.html
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Pilulina jeffreysii sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 25
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Saccammina sphaerica sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 18