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Species Globigerina (Globigerina) angulisuturalis Bolli 1957


Alternative name:
Globigerina angulisuturalis Bolli 1957
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test low trochospiral with five slowly increasing chambers in the final whorl. Sutures on spiral side depressed, radial; on umbilical side with deep, angular, U-shaped sutures between the chambers. Aperture lowarched interiomarginal, umbilical.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gg. (Gg.) angulisuturalis differs from Gg. (Gg.) ciperoensis and Gg. (Gg.) angustiumbilicata in possessing deep angular, U-shaped sutures and much smaller umbilicus. It seems to have descended from Gg. (Gg.) ciperoensis.
Synonym list:
Kennett & Srinivasan (1983):
1957 Globigerina ciperoensis angulisuturalis Bolli. - Bolli : p.215 pl 22 figs 11a-c
References:

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

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

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