Foraminifera taxon details
From editor or global species database
Diagnosis Test large, early stage in a low trochospiral coil, later nearly planispiral and semi-involute, asymmetrical, with axis of coiling perpendicular to that of the early stage, chambers inflated, gradually enlarging, sutures straight to curved, radial, thickened, and limbate on the spiral side, appearing beaded around the umbilicus, periphery subangular to rounded; wall calcareous, optically radial, thick, coarsely perforate except for the nonperforate septa and apertural face; aperture a low interiomarginal equatorial opening, bordered by a thickened lip. U. Eocene; Australia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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