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Ammotium cassis sensu Jones, R.W. 1994. The Challenger Foraminifera. Image source: Brady, H.B. (1884) Pl. 33
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Haplophragmium cassis in: Image source: Goës, A. 1894. A Synopsis of the Arctic and Scandinavian recent marine Foraminifera hitherto discovered. Kong. Svenska Vetenskaps-Akademiens Handlingar 25(9): 1-127 + 25 pls. (Notae numerorum tenues mensuram indicant millimetricam).
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Auckland, Rangitopuni Estuary; in Pl 1 of Hayward, B.W., Grenfell, H.R., Reid, C.M., Hayward, K.A. 1999. Recent New Zealand shallow-water benthic Foraminifera: Taxonomy, ecologic distribution, biogeography, and use in paleoenvironmental assessment. Institute of Geological and Nuclear Sciences Monograph 21, 258 p.
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Auckland, Riverhead; in Pl 1 of Hayward, B.W., Grenfell, H.R., Reid, C.M., Hayward, K.A. 1999. Recent New Zealand shallow-water benthic Foraminifera: Taxonomy, ecologic distribution, biogeography, and use in paleoenvironmental assessment. Institute of Geological and Nuclear Sciences Monograph 21, 258 p.
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A specimen harvested off the South Texas coast. In this location, this particular species selectively picked up dark mineral grains (hornblende) to make its test. Image courtesy of Pamela Stephens, Midwestern State University.
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A closeup of the aperture, which lies at the top of the largest chamber. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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This unusual specimen has an enlarged final chamber (the one on top left). Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Ammotium species are important in estuarine environments; they often dominate shallow, hyposaline sediments. This sample was collected in an inlet of the Oslofjord, Norway. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
