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ABSTRACT

Fabric and mineralogical studies of the test of a modem benthic foraminiferal species, recovered from several widely spearated locations in the Pacific and off Antarctica, have shown it to be constructed of opal precipitated by the foraminifer. Although microarchitecture and gross morphology of the siliceous test is similar to that in miliolid foraminifera, its mineralogy and structural details preclude assignment to any of the available taxa within the Order Foraminiferida. A new suite of taxa of suborder and lesser rank is proposed to accommodate this new form, which has been designated Silicoloculina profunda, n. gen, n. sp.

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