Diagnosis
provided by World Register of Marine Species
Test free, large, up to 2 mm in length, stout, biserial throughout, the lower margin of each chamber deeply incised just anterior to the septa, and with about four backward directed projections on each chamber that overlap the sutures, chamber lumen subdivided by four to six vertical radial partitions that extend nearly to the center of the test; sutures slightly arched, septa thick, particularly in the vicinity of the aperture; wall agglutinated, canaliculate, thick, coarser grained near the exterior and somewhat fined grained toward the test interior; aperture a low arch at the base of the apertural face. Holocene: Pacific. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.
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