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Subspecies Globorotalia (Globorotalia) tumida tumida Brady 1877 | ||||||
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Alternative name: | ||||||
Diagnosis / Definition: | ||||||
Kennett & Srinivasan (1983): Test large, trochospiral, biconvex, spiral side more convex than umbilical side, equatorial periphery ovate, slightly lobulate; axial periphery acute with a heavy keel; five to six wedge-shaped chambers in the final whorl, increasing slowly in size as added; spiral sutures limbate, slightly raised, curved obliquely backward, merging with keel . Umbilical sutures radial, depressed; surface densely and coarsely perforate with pores of uniform sizes, except for pustulate area on umbilical and spiral side. Umbilicus narrow, deep; aperture interiomarginal, extraumbilical-umbilical, a low arch covered by a large platelike lip. |
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Discussion / Comments: | ||||||
Kennett & Srinivasan (1983): Gr. (Gr.) tumida tumida is marked by its large tumid test, exceptionally heavy keel, and rapidly opening spire. Gr. (Gr.) tumida tumida resembles Gr. (Gr.) ungulata, but the latter has a very thin, delicate test and finely perforate surface ultrastructure with flat, smooth-interpore area . In Gr. (Gr.) tumida tumida, however, the surface is penetrated by large pores, lacking the flat, smooth interpore area Quilty (1976): Remarks: It is noteworthy that some Pleistocene specimens fromthe piston cores have incipient development of two keels suggestinghomeomorphy with the Cretaceous Globotruncanidae. One is illustrated. |
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Synonym list: | ||||||
Kennett & Srinivasan (1983): 1877 Pulvinulina menardii var. tumida Brady. - Brady : p535
1884 Pulvinulina tumida Brady. - Brady : pl 103 figs 4-6 (Type figure)
Quilty (1976): 1877 Globorotalia (Globorotalia) tumida tumida Brady. - Brady : p.535 (plates Brady, 1884, p. 692, pl. 103, figs. 4-6)
1976 Globorotalia (Globorotalia) tumida tumida Brady. - Quilty : p.697 pl. 16, figs. 3-4
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Was used in synonym list of: | ||||||
References: | ||||||
Brady,H.B. (1877): Brady,H.B. (1884): Quilty,P.G.. (1976): Kennett,J. and Srinivasan,M.S. (1983): |
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Anonymous: Unedited TaxonConcept data | ||||||
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