Diagnosis
provided by World Register of Marine Species
Early stage triserial, followed by a more extensive biserial stage with broad low chambers increasing rapidly in breadth and finally by irregularly spreading subglobular chambers separated by deeply constricted sutures; wall finely agglutinated, surface smoothly finished, whether solid or canaliculate is unknown; aperture areal near the base of the final chamber in the biserial stage and terminal in the irregular stage, bordered by a short neck or lip. Holocene; N. and S. 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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