Foraminifera taxon details
From editor or global species database
Diagnosis Test large, up to about 1.2 mm in diameter, lenticular, with subangular periphery, globular proloculus followed by undivided tubular second chamber that is involutely coiled, lamellae added over the umbonal area with each whorl, chamber lumen low, strongly curved, gradually tapering toward the umbonal region as seen in axial section; wall calcareous; aperture a high arch at the open end of the tubular chamber. U. Triassic (Norian to Rhaetian); Austria; Czechoslovakia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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