Diagnosis
provided by World Register of Marine Species
Test tiny, concavoconvex, in a high trochospiral coil with strongly convex and evolute spiral side, few inflated chambers per whorl, interior not described, umbilical margin of chambers partially extending into the umbilicus as a narrow flap, sutures depressed, gently curved and slightly oblique on the spiral side, nearly radial on the concave involute umbilical side, umbilicus open, periphery broadly rounded, peripheral outline lobulate; wall calcareous, regularly perforate, but portions of the chambers adjacent to the umbilicus may be nearly imperforate, surface smooth; aperture interiomarginal and extraumbilical with prominent bordering lip. Holocene; Gulf of Mexico; 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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