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Species Globorotalia scitula Brady 1882 | ||||||
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Alternative name: | ||||||
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. |
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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
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References: | ||||||
Brady,H.B. (1882): Brady,H.B. (1884): Cushman,J.A. and Stainforth,R.M. (1945): Renz,H.H. (1948): Bolli,H.M. (1957): Banner,F.T. and Blow,W.H. (1960): Srinivasan,M.S. (1975): Kennett,J. and Srinivasan,M.S. (1983): Vincent,E. and Toumarkine,M. (1990): Chaisson,W.P. and Leckie,R.M. (1993): |
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Anonymous: Unedited TaxonConcept data | ||||||
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