Foraminifera taxon details
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test conical, planoconvex, trochospiral, earliest whorl with three chambers, later with two chambers per whorl, all visible on the convex spiral side, only the final pair visible on the flat umbilical side; wall calcareous, finely perforate, optically radial; aperture a broad umbilical arch that is not covered by the opposing chamber, only by the next one on the same side. M. Jurassic (Bathonian), Holocene; USSR: Poland; S. Pacific; Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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