Deep-Sea taxon details
From editor or global species database
Diagnosis Test trochospirally coiled, primary aperture interiomarginal, extraumbilical-umbilical, with prominent apertural lip, apertures of earlier chambers remain visible around the umbilical region; no sutural secondary apertures. L. Cretaceous (Hauterivian) to U. Cretaceous (Maastrichtian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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