Foraminifera taxon details
From editor or global species database
Diagnosis Test discoidal, early stage planispiral, broad low chambers increasing rapidly in breadth and becoming successively peneropline and finally cyclic, chambers subtriangular in section, narrower toward the periphery, with the sloping distal part of the chamber overlapped by the succeeding chamber, interior subdivided by rudimentary radial septula; wall calcareous, porcelaneous; aperture of numerous circular pores in a single row in the median plane of the test at the periphery, remaining as intercameral pores in the septa of earlier chambers, alternating in position in successive chambers. U. Cretaceous (?Coniacian to Santonian); Italy: Sardinia; France. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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