Diagnosis
provided by World Register of Marine Species
Test tiny, up to 0.2 mm in diameter, low trochospiral coil of two whorls of rapidly enlarging and approximately hemispherical chambers, four per whorl, separated by curved and depressed sutures as seen from the spiral side, sutures radial around the large umbilicus on the umbilical side, periphery rounded; wall calcareous, hyaline, translucent, spiral side perforate, surface with up to four flangelike projections per chamber, oriented perpendicular to the periphery and crossing the chambers from near the periphery of the spiral side where they are most prominent and gradually becoming lower toward the umbilicus on the opposite side, umbilical side also with radial striae between the flanges; aperture small, interiomarginal, umbilical. Holocene; Caribbean: off Venezuela at 39 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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