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Species Globigerinoides fistulosus Schubert 1910 | ||||||
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Diagnosis / Definition: | ||||||
Kennett & Srinivasan (1983): Test large, trochospiral, three to four chambers in the final whorl; chambers spherical initially, later becoming compressed and radially elongate with multiple, slender, digitate extensions; sutures distinct, depressed; surface densely perforate; primary aperture interiomarginal, umbilical, a wide arch with a rim; supplementary apertures over sutures of earlier chambers. |
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Discussion / Comments: | ||||||
Kennett & Srinivasan (1983): This species evolved from Gs. sacculifer by developing multiple digitate extensions on last few chambers in the final whorl. Chaisson & Pearson (1997): Gs. fistulosus develops from Gs. sacculifer by adding multiple "final" sac-like chambers. Below the FO of sensu stricto forms of Gs. fistulosus, Gs. sacculifer with increasingly ornamented final chambers are observed. Above the LO the morphological transition in the reverse sense is observed. The downward extension of the stratigraphic range of Gs. fistulosus in Hole 925B may be due in part to our inclusion of less elaborate morphologies in the species definition. Chaisson & Leckie (1993): Remarks: The LO of Globigerinoides fistulosus approximates the Pliocene/ Pleistocene boundary at 1.6 Ma (Berggren et al., 1985b). Specimens of Globigerinoides sacculifer preceding the FO ofGlobigerinoides fistulosus s.s. begin to show signs of finger-like projections on and flattening of the final chamber. These specimens have been designated G. fistulosus s.l., and their presence is indicated on the range chart by queries. |
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Systematics: | ||||||
1 Superregnum Eukaryota Regnum Protoctista Phylum Ciliophora Subphylum Postciliodesmatophora Ordo Globigerinida Superfamilia Globigerinaceae Superfamilia Nonionacea Familia Globigerinidae Genus Globigerinoides Species Globigerinoides fistulosus 3 Classis Foraminifera Genus Beella Species Catapsydrax stainforthi Species Catapsydrax unicavus Species Globigerinoides fistulosus |
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Synonym list: | ||||||
Kennett & Srinivasan (1983): 1910 Globigerina fistulosa Schubert. - Schubert : p.323 text fig 1
Chaisson & d'Hondt (2000): 1910 Globigerina fistulosa Schubert. - Schubert : p.323 text fig 1
1983 Globigerinoides fistulosus Schubert. - Kennett & Srinivasan : 68 pl 14 figs 7-9
Chaisson & Pearson (1997): 1910 Globigerina fistulosa Schubert. - Schubert : p. 323 text fig. 1
1983 Globigerinoides fistulosus Schubert. - Kennett & Srinivasan : p. 68 pl. 14, figs. 7-9
Vincent & Toumarkine (1990): 1910 Globigerina fistulosa Schubert. - Schubert : p. 323 fig.1
1990 Globigerinoides fistulosus Schubert. - Vincent & Toumarkine : p. 831 pl 2, figs. 1-3
Chaisson & Leckie (1993): 1910 Globigerina fistulosa Schubert. - Schubert : p.323 text-fig. 1
1983 Globigerinoides fistulosus Schubert. - Kennett & Srinivasan : p.68 pl. 14; fig. 7-9
1993 Globigerinoides fistulosus Schubert. - Chaisson & Leckie : p.170 pl. 2; fig. 4
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Stratigraphy - absolute ages: | ||||||
FAD: 3.33 ± 0 [Ma], Berggren et al. (1995) LAD: 1.6 ± 0 [Ma], Berggren et al. (1995) LAD: 2.1 ± 0.05 [Ma], Chaisson & d'Hondt (2000) ODP Leg 165 Site 999 LAD: 1.88 ± 0 [Ma], Chaisson & Pearson (1997) ODP Leg 154 Site 925 |
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References: | ||||||
Schubert,R.J. (1910): Kennett,J. and Srinivasan,M.S. (1983): Vincent,E. and Toumarkine,M. (1990): Chaisson,W.P. and Leckie,R.M. (1993): Berggren,W.A.; Hilgen,F.J.; Langereis,C.G.; Kent,D.V.; Obradovich,J.D.; Raffi,I.; Raymo,M.E. and Shackleton,N.J. (1995): Chaisson,W.P. and Pearson,P.N. (1997): Chaisson,W.P. and d'Hondt,S.L. (2000): |
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Anonymous: Unedited TaxonConcept data | ||||||
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