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Abstract
Two new species of benthic foraminifera have been identified from Holocene sediments of the Papuan Plateau. Spirorutilus collinsi sp. nov. (suborder Textulariina) has a rapidly tapering, agglutinated test with depressed sutures, flattened upper chamber surfaces, and a low, broad-arched aperture. The second species, Cibicorbis aspera sp. nov. (suborder Rotaliina), differs from others of the genus in having rugae on both sides of the test, as well as rugose to serrate dorsal sutures.