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Species Globorotalia scitula Brady 1882


Alternative name:
Globorotalia (Hirsutella) scitula Brady 1882
Discussion / Comments:
Bolli (1957):
Globorotalia scitula was previously described from the Cipero formation (Cushman and Stainforth, 1945) as G. canariensis (d'Orbigny). D'Orbigny describes this form (Rotalia canariensis) as elongate depressed and carinate which brings it close to the G. menardii (d'Orbigny) group. Compared with this group, the equatorial periphery of G. scitula is more circular and the axial periphery is rounded to subangular. The Trinidad specimens are slightly larger than the type which was described from the Faroe Channel. Specimens of the same size as those found in Trinidad are today living predominantly in warm waters. Temperature and other ecological factors probably account for the variation in size.
Chaisson & Leckie (1993):
Remarks: Never common, but occurring fairly consistently throughout its range. Similar species: Globorotalia cibaoensis has a rougher, more opaque surface, often with a suggestion of a keel on the final chamber. The spiral sutures of G. scitula are more strongly curved than those of G. cibaoensis. G. juanai tends to be smaller, more opaque, and less circular in outline; the chambers are more inflated and more highly vaulted on the umbilical side. See G. praescitula.
Synonym list:
Bolli (1957):
1884 Pulvinulina scitula Brady. - Brady : p. 716 figs. in Brady, Rep. Voy. Challenger, Zool., vol. 9, pl. 103, figs. 7a-c, 1884
1945 Globorotalia canariensis d'Orbigny. - Cushman & Stainforth : p. 70 pl. 13, figs. 12a-b
1948 Globorotalia canariensis d'Orbigny. - Renz : p. 136 pl. 11, figs. 3a-b
1957 Globorotalia scitula Brady. - Bolli : pl. 29, figs. 11a-12c
Srinivasan (1975):
1882 Pulvinulina scitula Brady. - Brady : p.716 pl. 103; fig. 7a-c
1975 Globorotalia scitula Brady. - Srinivasan : p.147 pl. 3; fig. 18
Vincent & Toumarkine (1990):
1882 Pulvinulina scitula Brady. - Brady : p. 716 pl.103, fig.7
1960 Pulvinulina scitula Brady. - Banner & Blow : pl. 5, fig.5 (lectotype)
1990 Globorotalia scitula Brady. - Vincent & Toumarkine : p. 832 pl. 3, figs. 21, 22 and 29
Chaisson & Leckie (1993):
1882 Pulvinulina scitula Brady. - Brady : p.27 pl. 5; fig. 5 (lectotype)
1983 Globorotalia (Hirsutella) scitula Brady. - Kennett & Srinivasan : p.134 pl. 31; fig. 1 and 3-5
1993 Globorotalia scitula Brady. - Chaisson & Leckie : 173, 174 pl. 4, fig. 6; pl. 6, fig. 15-16
References:

Brady,H.B. (1882):
Report on the Foraminifers.
In: Exploration of the Faröe Channel During the Summer of 1880, in Her Majesty's Ship Knight Errant, with Subsidiary Reports, Proceedings of the Royal Society Vol. 11(111) p. 708-717

Brady,H.B. (1884):
Report on the foraminifera dredged by H.M.S. Challenger during the years 1873-1876.
In: Report of the scientific results of the voyage of H.M.S. Challenger, 1873-1876, Zoology Vol. 9 p. 1-814

Cushman,J.A. and Stainforth,R.M. (1945):
The foraminifers of the Cipero Marl Formation of Trinidad, British West Indies . Journal of Foraminiferal Research Vol. 14 p. 1-75

Renz,H.H. (1948):
Stratigraphy and fauna of the Agua Salada Group, State of Falcón, Venezuela . Geol. Soc. Amer., Mem. Vol. 32 p. 1-219

Bolli,H.M. (1957):
Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I..
In: Studies in Foraminifery, Bulletin of the U.S. National Museum Vol. 215 Eds: Loeblich, A.R.Tappan, H.Beckmann, J.P.Bolli, H.M.Gallitelli, E.M.Troelsen, J.C. p. 97-123

Banner,F.T. and Blow,W.H. (1960):
Some primary types of species belonging to the superfamily Globigerinaceae . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 11(1) p. 1-41

Srinivasan,M.S. (1975):
Middle Miocene Planktonic Foraminifera from the Hut Bay Formation, Little Andaman Island, Bay of Bengal . Micropaleontology Vol. 21(2) p. 133-150

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

Vincent,E. and Toumarkine,M. (1990):
Neogene planktonic foraminifers from the Western Tropical Indian Ocean, Leg 115.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 115 Eds: Duncan, R.A..Backman, J.Peterson, L.C. p. 795-836

Chaisson,W.P. and Leckie,R.M. (1993):
High-Resolution Planktonic Foraminifer Biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific).
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 130 Eds: Berger, W.H.Kroenke, L.W..Mayer, L.A..et al. p. 137-178
Anonymous: Unedited TaxonConcept data
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