Foraminifera taxon details
From editor or global species database
Diagnosis Test large, up to 1.25 mm in diameter, attached by the umbilical side, chambers in a low trochospiral coil, all chambers visible from the convex spiral side, only the final whorl visible on the flattened to concave umbilical side, chambers numerous, three to five per whorl, subglobular in the early stage, then becoming very low and crescentic as seen from the spiral side, appearing broad and wedgelike on the umbilical side, interior divided by numerous radial partitions or beams, with a few transverse rafters between the beams; wall agglutinated, with grains of fine quartz; aperture interiomarginal, near the umbilicus on the umbilical side. L. Cretaceous (L. Aptian); South Australia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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