Diagnosis
provided by World Register of Marine Species
Test elongate, subcylindrical, and sausage shaped, slightly curved, chambers very narrow and elongate, each added farther from the base, overlapping on one side but more regularly spaced on the opposite hence apparently sigmoid, sutures oblique to nearly longitudinal, flush, septa resorbed with growth so that test interior is not subdivided; wall calcareous, hyaline, thin, transparent, finely perforate, surface smooth and unornamented; aperture terminal, radiate, with a short cylindrical entosolenian tube. 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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