Diagnosis
provided by World Register of Marine Species
Test trochospiral, chambers globular to angular and may have peripheral imperforate carinal band; primary aperture umbilical, tegilla of successive chambers covering the umbilical area and may have accessory intralaminal and infralaminal apertures. U. Cretaceous (Turonian to Maastrichtian). (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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