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MarBEF Data System |
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WoRMS taxon details
From editor or global species database
Diagnosis Test planispiral and involute, with few chambers per whorl; slitlike aperture extends from umbilicus of one side to that on the other or may have a series of pores in that position. U. Cretaceous to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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