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Species Globigerina (Zeaglobigerina) decoraperta Takayanagi & Saito 1962 | ||||||
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| Diagnosis / Definition: | ||||||
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Kennett & Srinivasan (1983): Test compact, low to medium-high trochospiral, equatorial periphery lobulate, chambers spherical to subspherical, four in the final whorl, increasing uniformly in size as added; sutures on spiral and umbilical side almost radial and depressed; umbilicus wide and deep; aperture interiomarginal, umbilical, large semicircular, bordered by a rim. |
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| Discussion / Comments: | ||||||
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Kennett & Srinivasan (1983): Gg. (Zg.) decoraperta is distinguished from Gg. (Zg.) woodi by its higher-spired test and from Gg. (Zg.) rubescens mainly by its larger test, slightly smaller aperture, and less coarsely cancellate surface. Gg. (Zg.) decoraperta appears to have evolved from Gg. (Zg.) woodi during the early Middle Miocene (Orbulina suturalis Zone) in cool subtropical waters and may have given rise to Gg. (Zg.) rubescens during the Middle Pliocene. |
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| Kennett & Srinivasan (1983): 1962 Globigerina decoraperta Takayanagi & Saito. - Takayanagi & Saito : p.85 pl 28 figs 10a-c
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| References: | ||||||
Takayanagi,Y. and Saito,T. (1962): Kennett,J. and Srinivasan,M.S. (1983): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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