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Current identification:
Original Description
Test moderately trochospiral, periphery broadly rounded, somewhat lobulated; chambers inflated, usually four in last whorl, arranged in a lozenge on umbilical side; wall finely perforate, surface smooth; sutures depressed, but indistinct on spiral side, nearly radial on umbilical side; umbilicus depressed, almost closed; aperture elongate, without a lip.
Size: Maximum diameter of holotype 1.0 mm.
Extra details from original publication
Remarks: - This new species appears to be related to Globoquadrina venezuelana (Hedberg), but is clearly distinguished from it by the characters of the aperture.
Occurrence:- Restricted to the lower part of the Kyoragi formation, Amakusa Islands.
Asano, K. (1962). Tertiary Globigerinids from Kyushu, Japan. Science Reports of the Tohoku University, Series 2 (Geology). Special Volume 5: 49-65. gsReferences:
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Globigerina ariakensis compiled by the pforams@mikrotax project team viewed: 28-1-2021
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