Citation: Globigerina druryi subsp. decoraperta Takayanagi & Saito 1962Rank: sub-speciesType specimens: IGPS coll. cat. no. 75070 from sample A-16.; Pl. 28, figs. 10a-cType sample (& lithostrat): sample A-16; Nobori Fm.Type age (chronostrat): Miocene, TortonianType locality: IGPS (Institute of Geology and Paleontology, Sendai) locality no. Ko-25; 33°22'09" N., 134°03'33" E.
A cliff, 100 meters east of Nobori, Muroto City, Kochi Prefecture, Shikoku, Japan.Type repository: Sendai; Deposited in the collections of the Institute of Geology and Paleontology. Tohoku University, Sendai, Japan:
Original Description Test small, trochospiral, equatorial periphery lobulate, axial periphery broadly rounded; chambers spherical, about 12, arranged in about three whorls, increasing rather rapidly in size, last chamber somewhat protruded in radial direction; sutures rather distinct, depressed, nearly radial on both sides; wall calcareous, perforate, surface pitted; aperture a medium-sized, fairly high, symmetrical arch with a slightly thickened rim, interiomarginal and umbilical in position, placed rightly on opposite sides of antepenultimate chamber. Coiling of the tests is nearly random, but with slight preference to left in direction. Size: Maximum diameter of holotype 0.26 mm., thickness 0.19 mm. Other specimens range from 0.17 to 0.27 mm. in maximum diameter. Extra details from original publication Remarks: The new subspecies is distinguished from the typical Globigerina druryi by having a larger, high arched aperture with thickened rim instead of thin lip. Occurrence: Rather common.
Takayanagi, Y. & Saito, T. (1962). Planktonic foraminifera from the Nobori formation, Shikoku, Japan. Science Reports of the Tohoku University. 2(5): 67-105. gs
Globigerina druryi decoraperta compiled by the pforams@mikrotax project teamviewed: 22-3-2023
decoraperta not decorapertura
oops. thanks for pointing that, I had copied the typo from Fordham 1986 and not even noticed as I copied data from the original publication...