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Globigerinoides rubra d'Orbigny 1839 from: 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
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Anonymous: Unedited TaxonConcept data
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Species Globigerinoides rubra d'Orbigny 1839


Discussion / Comments:
Bolli (1957):
Globigerinoides rubra is a characteristic species ranging in the Cipero formation from the Catapsydrax dissimilis zone to the Globorotalia fohsi robusta zone. It is easily recognizable by the position of the primary and supplementary sutural apertures, which are always symmetrically placed above the suture between two earlier chambers (see text fig. 21, Nos. 6 a, b). Typical Globigerinoides rubra specimens of Cipero age appear indistinguishable from Recent forms. However, in Trinidad the species disappears at the close of the Cipero time, shortly after the extinction of Globototalia fohsi robusta, and is not found in the Lengua formation. Globigerinoides rubra apparently made its return to Trinidad again in late Miocene time. Together with Globigerina bulloides d'Orbigny it is found in the Upper Miocene Melajo formation. An explanation for the absence of Globigerinoides rubra in the Lengua formation might be found in assuming that the environmental conditions of the Lengua sea were not favorable for the life habits of the species.
Systematics:

21
 Genus Globigerinoides
Synonym list:
Bolli (1957):
1949 Globigerinoides rubra d'Orbigny. - Bermudez : p. 281 pl. 21, fig. 52
1954 Globigerinoides subquadrata Brönnimann. - Todd et al. : p. 680 pl. 1, fig. 5
1957 Globigerinoides rubra d'Orbigny. - Bolli : pl. 25, figs. 12a-13b, text-fig. 21, No. 6
References:

Bermudez,P.J. (1949):
Tertiary smaller foraminifers of the Dominican Republic . Spec. Publ.Cushman Lab. Foraminiferal Res., Vol. 25 p. 1-322

Todd,R.; Cloud,P.E.; Low,D. and Schmidt,R.G. (1954):
Probable occurrence of Oligocene on Saipan . Amer. Journ. Sci. Vol. 252 p. 673-682

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
Anonymous: Unedited TaxonConcept data
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