From editor or global species database
Diagnosis 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) [details]