Diagnosis
provided by World Register of Marine Species
Test free, planispiral, and biumbilicate but asymmetrical, with broad subglobular chambers that result in a lobulate margin; wall agglutinated with cabonate cement; aperture areal, near the base of the apertural face, one or a series of large and irregular openings. Holocene; Pacific, abyssal depths of the Kurile-Kamchatka Trench, from 8,185 m to 9,530 m. (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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