CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina ariakensis Asano 1962
This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Citation: Globigerina ariakensis Asano 1962Rank: speciesType specimens: Pl. 20, figs. 5a, b, c; 7a, b, c.; Holotype:- Figs. 7a, b, c, ; ; IGPS coll. cat. no. 77223.Type sample (& lithostrat): Kyoragi formationType age (chronostrat): EoceneType locality: 500 m west of Okubo, Ariake-mura, Kami-shima, Kyushu Region, Japan.
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. Etymology: 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. Editors' Notes
References:
Asano, K. (1962). Tertiary Globigerinids from Kyushu, Japan. Science Reports of the Tohoku University. Special Volume 5: 49-65. gs
Globigerina ariakensis compiled by the pforams@mikrotax project teamviewed: 30-1-2023
Asano 1962 pl 20 f7.JPG
Asano 1962 pl 20 f5.JPG
Asano 1962 pl 20 f7.JPG
Asano 1962 pl 20 f5.JPG
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