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The genus name "Ammobaculites" means "sandy walking stick". As you can seem the early chambers (at bottom) coil like the top of a cane, but later chambers grow in a straight line. Individual isolated from the Hamble estuary, southern England. Image courtesy of Dr. Elisabeth Alve, University of Oslo. Citation: Alve, E. and Murray, J.W. Ecology and taphonomy of benthic foraminifera in a temperate mesotidal inlet. Journal of Foraminiferal Research 24:18-27.
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A closer view of the aperture. Aperture morphology is one of the important diagnostic characteristics for foram identification. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Collected in Sandebukta, an inlet of the Oslofjord in Norway. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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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.
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description to come
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A side view of the test, which is 1.1 mm long. The aperture is toward the top; the bottom forms the tight coil typical of species in this genus. 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.