WoRMS taxon details
From editor or global species database
Diagnosis Test ovate in outline, circular in section, base bluntly rounded, early stage in a low trochospiral coil of about three whorls and about six very low lunate chambers per whorl as seen from the test base, then abruptly increasing in chamber height and reduced number per whorl, final whorl of three chambers comprises most of the test height, intercameral sutures strongly oblique, slightly depressed; wall calcareous, finely perforate, optically granular, surface smooth; aperture a small loop at the base of the final chamber face perpendicular to the suture and with a narrow bordering lip at the distal margin. U. Cretaceous (Santonian to Campanian); USA: Mississippi, Texas. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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