Diagnosis
provided by World Register of Marine Species
Test free, trochospiral, flattened, chambers increasing rapidly in size as added, sutures strongly oblique on spiral side and may be depressed, resulting in a lobulate outline, only four to five chambers visible on umbilical side, the final one occupying much of the umbilical surface and appearing T-shaped because of its pronounced umbilical lobe; wall finely agglutinated, thin and fragile, brown in color, darker in the early whorl, surface smoothly finished; aperture at the end of the umbilical chamber lobe and directed either into the umbilicus or backward toward the earlier chambers, may be partially covered by a shelflike lip. Holocene; Caribbean, E. coast of Trinidad. (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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