Diagnosis
provided by World Register of Marine Species
Test ovate in outline, rounded to subtriangular in section, cryptoquinqueloculine, chambers one-half coil in length and added 144¡ apart but sufficiently overlapping so that only three chambers are visible from the exterior; wall calcareous, imperforate, porcelaneous, surface may be finely striate; aperture terminal, with a miliolinelline flap, the opening extending around the flap and up the chamber as an irregularly triradiate opening, the rays of the opening also secondarily bifurcating in well-developed specimens. Holocene; Antarctic: Weddell Sea at 193 m to 456 m; Pacific: Northeast New Zealand at 2,200 m; Caribbean, at 780 m. (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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