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This specimen was collected off Papeete, Tahiti. 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 Cretaceous (Albian) foram was identified at sites in Alberta, Canada. Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:51-56, and is used with permission.
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Fossil (Badenian) specimen, from Nussdorff, Austria. 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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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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Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:51-56, and is used with permission.
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Polished and etched horizontal section through 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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Image of holotype, with the aperture toward the viewer. Image courtesy of David B. Scott, Dalhousie University. This image was originally published in
Palaeologica Electronica, vol. 3, issue 2, and is used with the kind permission of that journal and the Paleontological Association.
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Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:51-56, and is used with permission.
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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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Image of holotype. This species is probably a form of
D. semipunctata. Test is 1.2 mm. across. Image courtesy of David B. Scott, Dalhousie University. This image was originally published in
Palaeologica Electronica, vol. 3, issue 2, and is used with the kind permission of that journal and the Paleontological Association.
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This Lower Cretaceous (Coniacian-Santonian) foram was isolated from strata found in Eriksdal, Sweden. Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:57-60, and is used with permission.
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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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Image of holotype. Image courtesy of David B. Scott, Dalhousie University. This image was originally published in
Palaeologica Electronica, vol. 3, issue 2, and is used with the kind permission of that journal and the Paleontological Association.
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Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:57-60, 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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Image courtesy of Stefan Revets. This image was first published in J. Foram Res. 32:57-60, and is used with permission.
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Fossil (Recent) foram found near Naples, Italy. 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 sample was collected in waters near the Dry Tortugas, Florida (USA). Photo courtesy of Stefan Revets. This image was first published in J. Foram. Res. 32:61-67 and is used with permission.
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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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Photo courtesy of Stefan Revets. Originally published in J. Foram. Res. 32:61-67, and used with permission.
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Roughly spherical foraminiferan with coarse perforations on the ventral surface (above right). The dorsal surface is composed of a brownish spiral of increasing sized flat chambers; the whole specimen appears to be a benthic foraminiferan with an inflated chamber (similar to those in planktonic species) on the ventral side. Our specimens have been examined by an expert (S. Richardson) and appear similar to the dispersal form of the genus Tretomphalus, a shallow-water benthic group. Most, though not all, are empty shells.
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The aperture is shifted almost completely to the bottom of the test in this species. 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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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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Collected off Capo Colonna, Italy. The test is about 60 microns long. Image courtesy of Jan Pawlowski, University of Geneva. This image first appeared in J. Foram. Res 23:231-237, and is used with permission.