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Ammonia, one of the foraminifera living within a multi chambered test. Living cell, with pseudopodia being produced from the opening of the terminal chamber and from the surface of the test. Phase contrast
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Image courtesy of Joan Bernhard, WHOI. This image originally appeared in J. Foram. Res. 16:207-215 and is used with permission.
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Ammonia (a-moan-knee-a), one of the foraminifera living within a multi chambered test. Dorsal surface. Phase contrast
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This fossil foram was taken from Eocene laminated strata, which are thought to have been laid down in anoxic conditions. Image courtesy of Joan Bernhard, WHOI. This image originally appeared in J. Foram. Res. 16:207-215 and is used with permission.
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Ammonia (a-moan-knee-a), one of the foraminifera living within a multi chambered test. Living cell, with pseudopodia being produced from the surface of the test. Phase contrast
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This fossil test was found in Albian strata, thought to have been laid down in anoxic conditions. Image courtesy of Joan Bernhard, WHOI. This image originally appeared in J. Foram. Res. 16:207-215 and is used with permission.
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Ammonia (a-moan-knee-a), one of the foraminifera living within a multi chambered test. Living cell, ventral surface. Phase contrast
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This fossil was taken from Cenomanian strata (the Mancos Shale). Image courtesy of Joan Bernhard, WHOI. This image originally appeared in J. Foram. Res. 16:207-215 and is used with permission.
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Ammonia (a-moan-knee-a),one of the foraminifera living within a multi chambered test. Living cell, with pseudopodia being produced from the opening of the terminal chamber and from the surface of the test. Phase contrast
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Image courtesy of Joan Bernhard, WHOI. This image originally appeared in J. Foram. Res 16:207-215 and is used with permission.
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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 specimen was collected off the southeast coast of the island of Honshu (Japan). Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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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This species is less "flat" than its sister species, P. opercularis. Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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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Notice the prominent "bosses" on the underside of the test. Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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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This species is common in Japanese coastal waters. Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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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Notice the flatter profile and diferent coiling pattern compared to P. nakamurai. Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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 Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 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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Although this foraminiferan morphologically resembles the "Type A" form of P. opercularis, it is more closely related to P. nakamurai by ITS sequence phylogenetic analysis. This specimen was collected off the southeast coast of the island of Honshu (Japan). Image courtesy of Masashi Tsuchiya, Japan Agency for Marine-Earth Science and Technology. This image first appeared in J. Foram Res. 33:285-293 and is used with permission.