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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 20, Fig. 11: L. Devonian (Gedinnian), Haragan Formation, Oklahoma, USA. Side view, x 40 (from Ireland, 1939). courtesy of Michael Hesemann https://foraminifera.eu
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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 20, Fig. 4: Silurian (Llandoverian-Wenlockian), Chimney Hili Limestone, Oklahoma, USA. Lectotype, x 62 (from Loeblich and Tappan, 1964). courtesy of Michael Hesemann https://foraminifera.eu
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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 20, Figs. 6-7: M. Ordovician, Viola Limestone, Oklahoma, USA. Top and side views of topotype, x 83 (from Loeblich and Tappan, 1964). courtesy of Michael Hesemann https://foraminifera.eu
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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 21, Fig. 3: Ordovician, Estonia. Exterior, x 95 (from Eisenack, 1954). courtesy of Michael Hesemann https://foraminifera.eu
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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 20, Figs. 8-10: Silurian, Gotland Island. 8, Irregular form, x 40; 9, hemispherical specimen, x 58 (both from Eisenack, 1932); 10, neotype, x 67 (from Eisenack, 1954).
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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 18, Figs. 1-2: L. Devonian, Nevada, USA. 1, Paratype, 2, holotype, x 60 (from McClellan, 1973).
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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 20, Fig. 5: L. Silurian, Brassfield Limestone, Illinois, USA. Side view, x 25 (from Dunn, 1942). courtesy of Michael Hesemann https://foraminifera.eu
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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 18, Figs. 9: Ordovician, Esthonia. Neotype, x 50 (from Eisenack, 1954).
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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 25, Fig. 10: M. Devonian, Ohio, USA. x 40 (from G. A. Stewart and Lampe, 1947). courtesy of Michael Hesemann https://foraminifera.eu
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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 26, Figs. 1-2: Silurian, Oklahoma, USA. Edge and top views of topotype, x 162). courtesy of Michael Hesemann https://foraminifera.eu
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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 21, Fig. 6: Silurian, Osgood Limestone, Missouri, USA. Holotype, x 27 (from Dunn, 1942). courtesy of Michael Hesemann https://foraminifera.eu
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A closeup of the aperture. 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 species is common in the deep, marine ares of the Sandebukta, a branch of the Oslofjord. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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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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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 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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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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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 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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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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This benthic species generally lives buried under 2-5 mm. of sediment. Image courtesy of Thomas Wilding, Southampton Oceanography Centre. This image first appeared in J. Foram. Res 32:358-363 and is used with permission.
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The opaque white color of the cytoplasm gives this species its name. Notice the loose structure of the cell mass. Image courtesy of Thomas Wilding, Southampton Oceanography Centre. This image first appeared in J. Foram. Res 32:358-363 and is used with permission.
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An individual that has contracted into a rounded shape after collection. Image courtesy of Thomas Wilding, Southampton Oceanography Centre. This image first appeared in J. Foram. Res 32:358-363 and is used with permission.