Diagnosis
provided by World Register of Marine Species
Test a low trochospiral coil of one and a half to two gradually enlarging whorls, eight chambers in the final whorl, sides flattened, sutures weakly depressed, straight, and radial to oblique on the evolute spiral side, curved on the involute umbilical side and deeply incised from the umbilicus midway to the periphery, final whorl of chambers somewhat produced in the umbilical region, periphery rounded; wall calcareous, hyaline, optically radial, perforate, surface smooth, except for numerous beadlike granules that cover the lower part of the apertural face, the borders of the incised sutures on the umbilical side and the umbilicus; aperture interiomarginal, extending from the umbilicus to the periphery but commonly obscured by the granular deposit, supplementary sutural apertures reported to occur on the umbilical side, although these may merely reflect the deeply incised sutures, as in Buccella. Pliocene; France. (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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