Deep-Sea taxon details
From editor or global species database
Diagnosis Test compressed, each chamber completely enveloping earlier formed ones, added with successive apertures at opposite poles; aperture terminal, oval to slitlike, and may have thickened lip. U. Cretaceous (Maastrichtian) to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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