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Globorotalia (Jenkinsella) mayeri Cushman & Ellisor 1939 from: Kennett, J.Srinivasan, M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
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Species Globorotalia (Jenkinsella) mayeri Cushman & Ellisor 1939


Alternative name:
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test low trochospiral, equatorial periphery ovate, slightly lobulate, axial periphery broadly rounded, the final chamber gently depressed; chambers inflated, usually five in the final whorl, increasing rapidly in size as added; sutures on both spiral and umbilical sides curved to oblique, depressed; surface coarsely perforate with large pores and polygonal ridges; umbilicus narrow; aperture a high arch bordered by a distinct rim, interiomarginal, umbilical-extraumbilical.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gr. (J.) mayeri is distinguished from Gr. (J.) siakensis by its distinctly curved spiral sutures, more closely appressed and embracing chambers in the final whorl, and a distinctly high-arched aperture.
Synonym list:
Kennett & Srinivasan (1983):
1939 Globorotalia mayeri Cushman & Ellisor. - Cushman & Ellisor : p.11 pl 2 figs 4a-c
Was used in synonym list of:
References:

Cushman,J.A. and Ellisor,A.C. (1939):
New species of foraminifers from the Oligocene and Miocene . Cushman Lab. Foraminiferal Res. Contrib. Vol. 15(1) p. 1-14

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

Anonymous: Unedited TaxonConcept data
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