Citation: Globigerina sakitoensis Asano 1962Rank: speciesType specimens: Pl. 22, figs. 1a, b, c.; IGPS coll. cat. no. 77243.Type sample (& lithostrat): Nakado formation;Type age (chronostrat): EoceneType locality: 126m depth of the boring core drilled at Nakado, Sakito-machi, Nishisonogi- gun, Nagasaki Prefecture; Kyushu, Japan
Original Description Test large, subquadrate in outline, low-spired, periphery broadly rounded; chambers few, large and inflated, later ones strongly embracing dorsally and overhanging the umbilicus ventrally, last three constituting most of the test; sutures indistinct on dorsal side, depressed and gently curved on ventral side; umbilicus narrow, deep; wall finely perforate ; aperture narrow, often with a small lip. Size: Maximum diameter 0.8 mm, thickness 0.5 mm. Extra details from original publication Remarks: - This species is distinguished from Globigerina eximia Todd by the subquadrate test and not lobulate chambers. Occurrence:- Restricted to the Nakado formation, Nagasaki Prefecture. Similar forms (Pl. 22, figs. 2a-c) although not strongly embracing dorsally were found in the samples from Yamaguchi, Kazusa-machi, Minami-takaki-gun, Nagasaki Prefecture.
Asano, K. (1962). Tertiary Globigerinids from Kyushu, Japan. Science Reports of the Tohoku University. Special Volume 5: 49-65. gs
Globigerina sakitoensis compiled by the pforams@mikrotax project teamviewed: 5-6-2023