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Species Globorotalia (Jenkinsella) mayeri Cushman & Ellisor 1939 | ||||||
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| Diagnosis / Definition: | ||||||
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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. |
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| Discussion / Comments: | ||||||
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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. |
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| Kennett & Srinivasan (1983): 1939 Globorotalia mayeri Cushman & Ellisor. - Cushman & Ellisor : p.11 pl 2 figs 4a-c
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| References: | ||||||
Cushman,J.A. and Ellisor,A.C. (1939): Kennett,J. and Srinivasan,M.S. (1983): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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