Diagnosis
provided by World Register of Marine Species
Test elongate, rounded to subquadrate in section, inflated chambers triserially arranged in the early stage, later biserial and twisted about the longitudinal axis, sutures distinct, depressed; wall calcareous, distinctly perforate, hyaline, surface smooth; aperture a curved loop or slit extending slightly obliquely up the apertural face from its base, bordered by a narrow rim, with one margin incurved to form a narrow toothplate. Holocene; Gulf of Mexico. (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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