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MarBEF Data System |
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WoRMS taxon details
From editor or global species database
Diagnosis Test lenticular, planispiral and involute, biconvex, close coiled, rapidly enlarging chambers extending to the umbilicus without a central boss, sutures slightly curved, depressed, periphery carinate; wall calcareous, perforate, optically radial, hyaline, surface with numerous low costae radiating from the apertural region to the previous suture, those of earlier chambers being secondarily thickened and more elevated, ribs also may break up into rows of knobs; apertural face smooth, with elevated margins, aperture radiate at the peripheral angle, the slit in the median position on the apertural face being enlarged and ovate in outline. Holocene; off Morocco, Northwest Africa. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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