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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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Collected off Capo Colonna, Italy. 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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Part of the outer surface of the test is broken, showing the surface of an older chamber below. 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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View of the holotype. Image courtesy of Jan Pawlowski, University of Geneva. This image first appeared in J. Foram. Res 23:231-237, and is used with permission.
