Diagnosis
provided by World Register of Marine Species
Test elongate ovate in outline, compressed and with flattened sides, chambers one-half coil in length and added in various planes, appearing sigmoid in section, chambers broadest at the base where they curve across the aboral end, narrowing toward the aperture, and overlapping more strongly on one side than the other, a varied number being visible from the exterior; wall calcareous, imperforate, porcelaneous, surface polished; aperture at the end of the final chamber, a narrow ovate slit bordered by a narrow lip, without a tooth. Holocene; Caribbean, off Venezuela and Colombia. (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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