Diagnosis
provided by World Register of Marine Species
Test free, flaring, and spatulate to rhomboidal in outline, flattened to diamond shaped in section, with broad, low, biserially arranged chambers, and thickened and elevated sutures that form a peripheral keel and a median ridge along the zigzag suture; wall agglutinated, with quartz and calcium carbonate particles in a fine-grained ground mass and with very small micropores opening at the surface; aperture a high quadrangular opening at the base of the final chamber face, with a distinct bordering ridge on three sides, the lateral borders of the aperture being slightly constricted. Holocene; Nigeria; Liberia; Ivory Coast. (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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