Foraminifera taxon details
From editor or global species database
Diagnosis Test small, up to 0.3 mm in length, elongate ovate in outline, flattened, periphery rounded, chambers broad and low, obliquely arranged and extending proximally at the margins, biserial but slightly sigmoid in plan in the early stage; wall calcareous, finely perforate, radial in structure, surface smooth; aperture terminal, an elongate slit in the plane of compression. U. Cretaceous (Campanian); USA: California. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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