Diagnosis
provided by World Register of Marine Species
Test attached, commonly to other foraminifers, a single subspherical to hemispherical chamber that may be incompletely divided internally by an inward growing partial septum; wall thick, of agglutinated fine sand, sponge spicules, and foraminiferal tests, surface roughly finished, in part as the result of dislodgement of some of the larger particles; no apparent aperture in globular individuals, but a few may have a rounded aperture at the end of a tubular projection from one side, perhaps as a temporary development in ontogeny. Holocene: Atlantic; North Sea; Caribbean; Pacific. (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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