Diagnosis
provided by World Register of Marine Species
Test discoidal, proloculus followed by streptospirally enrolled tubular second chamber, later planispiral and evolute, with up to twelve chambers in the final whorl; wall calcareous, imperforate, porcelaneous; aperture a high arch at the open end of the final chamber. Holocene; N. Atlantic: Azores. (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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