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Globorotalia (Globorotalia) tumida flexuosa Koch 1923 from: Kennett, J.Srinivasan, M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
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Subspecies Globorotalia (Globorotalia) tumida flexuosa Koch 1923


Alternative name:
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test large, trochospiral, equatorial periphery oval to elongate; axial periphery acute with a heavy keel, anterior rim of the final chamber bent sharply toward umbilicus; chambers six to seven in the final whorl, with the last chamber showing extreme elongation and infolding of the anterior part toward the umbilicus; spiral sutures limbate, raised, oblique merging with the keel, umbilical sutures sinuously radial, depressed; surface smooth, densely perforate, heavily pustulate on umbilical shoulders; umbilicus narrow, deep; aperture interiomarginal, umbilical-extraumbilical, a low arch bordered by a platelike lip.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gr. (Gr.) tumida flexuosa is similar in all respects with Gr. (Gr.) tumida tumida except for the sharp bend of the anterior part of the final chamber toward the umbilicus. Gr. (Gr.) tumida flexuosa differs from Globorotalia menardii neoflexuosa Srinivasan, Kennett, and Be in having narrower and more elliptical outline, less lobulate periphery, and a heavy keel.
Synonym list:
Kennett & Srinivasan (1983):
1923 Pulvinulina tumida var. flexuosa Koch. - Koch : p.351 text figs 9a-b, 10a-b
Quilty (1976):
1923 Globorotalia (Globorotalia) tumida flexuosa Koch. - Koch : p.357 text-fig. 9-10
1976 Globorotalia (Globorotalia) tumida flexuosa Koch. - Quilty : p.695 pl. 15, figs. 21-22
References:

Koch,R. (1923):
Die jungtertiäre Foraminiferen fauna von Kabu (Res. Surabaja, Java) . Ecoglae geologicae Helvetiae Vol. 18(2)

Quilty,P.G.. (1976):
Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Anonymous: Unedited TaxonConcept data
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