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Orbulina bilobata d'Orbigny 1846 from: 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
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Species Orbulina bilobata d'Orbigny 1846


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test large, bilobate, early stage trochospiral chambers spherical, the penultimate one partly or completely enveloping the early globigerine stage; surface distinctly perforate with spine base visible on the interpore ridges . Aperture areal, small, distributed over the wall of the final chamber, and along the sutures.
Synonym list:
Kennett & Srinivasan (1983):
1846 Orbulina bilobata d'Orbigny. - d'Orbigny : p.164 pl 9 figs 11-14
Bolli (1957):
1846 Globigerina bilobata d'Orbigny. - d'Orbigny : p. 164 pl. 9, figs. 11-14
1941 Orbulina bilobata d'Orbigny. - Palmer : p. 286 pl. 28, fig. 3
1949 Orbulina bilobata d'Orbigny. - Bermudez : p. 282 pl. 22, fig. 4
1951 Orbulina bilobata d'Orbigny. - Brönnimann : pp. 135-136 "text-fig. 3, figs. 1-2; 9-10; 17; 19, text-fig. 4, figs. 5-6; 17-18"
1956 Biorbulina bilobata d'Orbigny. - Blow : pp. 69-70 text-fig. 2, No. 16
1957 Orbulina bilobata d'Orbigny. - Bolli : pl. 27, fig. 6
Srinivasan (1975):
1846 Globigerina bilobata d'Orbigny. - Orbigny : p.164 pl. 9; fig. 11-14
1975 Orbulina bilobata d'Orbigny. - Srinivasan : p.149 pl. 4; fig. 11
References:

Orbigny,D.A.. (1846):
Foraminiferes fossiles du bassin tertiaire de Vienne (Austriche) . Paris: Gide et Comp p. 1-312

d'Orbigny,A. (1846):
Die fossilen Foraminiferen des tertiären Beckens von Wien - Foraminifères fossiles du bassin tertiaire de Vienne. p. 333

Palmer,D.K. (1941):
Foraminifera of the Upper Oligocene Cojimar formation of Cuba . Mem. Soc. Cubana Hist. Nat. Vol. 15(2) p. 181-200

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

Brönnimann,P. (1951):
Globigerinita naparimaensis n. gen., n. sp., from the Miocene of Trinidad, B. W. I. . Contr. Cushman Found. Foram. Res. Vol. 2(1) p. 16-18

Blow,W.H. (1956):
Origin and evolution of the foraminiferal genus Orbulina d'Orbigny . Micropaleontology Vol. 2(1) p. 57-70

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

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.

Anonymous: Unedited TaxonConcept data
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