Diagnosis
provided by World Register of Marine Species
Test nearly planispiral, involute, somewhat compressed, rapidly enlarging chambers result in an auriculate outline, one or more small supplementary chambers at the umbilical end of each chamber on both sides of the test, tubular internal partition attached to the inside wall at the upper and lateral margins of the areal aperture, free edges of the partition infolded at each side of the lower rim of the aperture, with branches from the tubular partition opening at the lateral accessory aperture, external sutures gently curved, depressed; wall calcareous, finely perforate except for a clear oval imperforate equatorial area just above the aperture on the apertural face; aperture consists of an areal slit and an interiomarginal equatorial opening, with supplementary sutural slitlike openings on both sides of test opening into the supplementary chambers. Holocene; Caribbean. (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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