Diagnosis
provided by World Register of Marine Species
Test attached, a single hemispherical chamber that may have a bordering flange; wall agglutinated, with considerable cement; no apparent aperture, hence communication with the exterior probably through interstitial pores. M. Silurian to Holocene; cosmopolitan. (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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