Nomenclature
original description
Finlay, H. J. (1947). New Zealand Foraminifera: Key Species in Stratigraphy - No. 5. <em>New Zealand journal of science and technology.</em> B28: 259-292. [details]
Other
Present
Inaccurate
Introduced: alien
Containing type locality
From editor or global species database
Diagnosis Test globular to subquadrate, trochospiral, umbilicate, chambers enlarging rapidly in the early whorls, about four to five in the final whorl, sutures radial and depressed, periphery rounded to truncate; wall calcareous, perforate, surface coarsely pitted or cancellate with polygonal ridges, nonspinose; aperture interiomarginal, umbilical, with bordering rim that may become a prominent toothlike flap, those of preceding chambers may be visible within the open umbilicus. M. Eocene to U. Miocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database