Diagnosis
provided by World Register of Marine Species
Test narrow and elongate, slightly flattened and oval in section, biserial, chambers moderately inflated, increasing rapidly in relative height, with later chambers cuneate and tending to become centered and uniserial, sutures oblique, depressed; wall calcareous, hyaline and transparent, optically radial, finely perforate, surface smooth; aperture basal in the juvenile stage, terminal in the adult, elliptical, with distinct bordering lip and internal siphonlike toothplate, the free part protruding through the apertural opening. Holocene; N. and S. Atlantic; Caribbean; West Indies; Red Sea. (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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