Foraminifera taxon details
From editor or global species database
Diagnosis Test relatively large, planispiral, and involute, moderately compressed, biumbilicate, chambers numerous, each with a large arched triangular apertural plate arising at the umbilical end of the apertural lip, those of successive chambers fused along their borders into a tube that opens at the outer margin, sutures thickened, curved, nearly flush, periphery rounded; wall calcareous, hyaline, optically granular, finely perforate; aperture a low interiomarginal, equatorial slit, extending laterally to the umbilici and bordered by a narrow lip. L. Miocene to Holocene; Fiji; New Zealand. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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