Foraminifera taxon details
From editor or global species database
Diagnosis Test subconical, trochospiral, earliest stage apparently free living, later fixed to the substrate by a small attachment area near the apex, commonly three inflated chambers per whorl but may have up to five, sutures depressed; wall calcareous, primary lamina with organic lining, very coarsely and evenly perforate, pores opening at small mounds, surface roughened and pustulose but without inflational pillars through the wall; aperture an umbilical arch bordered by a projecting lip. U. Eocene (Runangan); Australia; New Zealand. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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