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As this foram grows, the broad edge of the younger parts of the test may begin to branch away from each other. Here, the process is beginning with the formation of distinct lobes. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.
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This species is often found in Explorers Cove, a relatively quiet and undisturbed area on the coast of the Ross Sea. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.
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Cornuspira planorbis.
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This example of the species has completely abandoned the typical coiling pattern and is growing in a rectilinear, branching pattern. The younger part of the test is to the left. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.
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Notice the prominent ridge along the outside of the coil, which gives this species its name. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.
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This species is found in several places in the North Atlantic and the Arctic Sea. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.
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Notice the interior architecture of the test: a slightly ridged but undivided tube. Image courtesy of Gudmundur Gudmundsson, Icelandic Institute and Museum of Natural History. This image was originally published in J. Foram. Res. 32:308-318, and is used with permission.