Diagnosis
provided by World Register of Marine Species
Test similar to Reophax but with more symmetrical, regular, and gradually enlarging chambers, horizontal sutures and straighter axis; wall agglutinated of a single layer of grains; rounded aperture at the end of a short tubular neck. Holocene; E. Pacific; N. Atlantic. (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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