dcsimg

Diagnosis

provided by World Register of Marine Species
Wall porcelaneous, early stage pitted or perforate and less commonly may be perforate throughout growth; chambers planispiral, uncoiling, flabelliform, or cyclical, may be subdivided by interseptal partitions or pillars. U. Permian (U. Djulfian) to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)

Reference

Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.

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contributor
Tomas Cedhagen [email]