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Ammonia (a-moan-knee-a), one of the foraminifera living within a multi chambered test. In this cell the test is empty. Photographed with crossed polarizers.
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This species can be found worldwide. Image courtesy of Maria Holzmann, University of Vienna. This image first appeared in J. Foram. Res. 33:277-284 and is used with permission.
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Notice the finely-perforated and glassy test; these features are characteristic of rotaliid foraminiferans. Collected in San Francisco Bay, USA. Phase-contrast photomicrograph by Scott Fay, 2005.
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Individual collected in Saanich Inlet, Vancouver Island, British Columbia. This species is particularly common in shallower, oxygenated regions of the inlet. Image courtesy of R. Timothy Patterson, Carleton University. This image first appeared in J. Foram. Res. 28:201-219 and is used with permission.
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The reticulopodia are highly visible in this image of a living specimen. Individual collected from San Francisco Bay, USA. Phase-contrast photomicrograph by Scott Fay, 2005.
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Individual collected in Saanich Inlet, Vancouver Island, British Columbia. Image courtesy of R. Timothy Patterson, Carleton University. This image first appeared in J. Foram. Res. 28:201-219 and is used with permission.
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Ammonia sp. T7 was collected in the Lighthouse salt marsh on Sapelo Island, GA. The genus Ammonia is found worldwide in near shore environments, but there are many cryptic species.
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In this species, the spiral face is flat while the umbilical face is steeply convex. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Dynamic movement and bidirectional streaming seen in reticulopodia of Ammonia. Isolated by L Wegener. Video by DJ Patterson and D Lahr.
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The aperture is to the right, just below the upper edge of the test. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Calcareous foraminifera isolated from Eel Pond in Woods Hole, MA, USA by dredging pond. Phase contrast image by Laura Wegener Parfrey
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Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Calcareous rotaliid foram isolated from marine sediments in Eel Pond, Woods Hole, MA, USA by Laura Wegener Parfrey.
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A horizontal section through the test. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Baculogypsina .
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Specimen collected at Archachon, France. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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This unidentified species inhabited the Laguna Madre area at one time, but is not found there now. Image courtesy of Pamela Stephens, Midwestern State University.
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Horizontal section through the test. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Dorsal view of Elphidion. Collected from Eel Pond, Woods Hole. Image by L Wegener, DJ Patterson and D Lahr.
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Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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Ventral view. This foram was collected by L. Wegener from Eel Pond, Woods Hole. Image by L Wegener, DJ Patterson and D Lahr.
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Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.
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This specimen is probably R. colonnensis, based on its umbilical face morphology, but has a much smoother spiral face than is normal. Image courtesy of Jan Pawlowski, University of Geneva. This image first appeared in J. Foram. Res 23:231-237, and is used with permission.
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This Eocene fossil specimen was collected near Parnes, France. Image courtesy of Stefan Revets. This image first appeared in Hansen and Revets, J. Foram. Res. 22:166-180 (1992) and is used with permission.