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Globigerinella praesiphonifera Blow 1969 from: Vincent, E.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
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Anonymous: Unedited TaxonConcept data
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Species Globigerinella praesiphonifera Blow 1969


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test low trochospiral, equatorial periphery lobulate; axial periphery broadly rounded; chambers inflated, subglobular, well separated from one another, five slowly enlarging chambers in the final whorl; sutures strongly curved, depressed; surface finely hispid, spinose with circular spine bases; umbilicus narrow, deep; aperture interiomarginal, umbilical-extraumbilical, without a lip or rim.
Discussion / Comments:
Kennett & Srinivasan (1983):
Ge. praesiphonifera differs from Ge. aequilateralis in that the trochospiral coil is maintained throughout and that the tendency toward planispirality is confined to the final whorl. This species is distinguished from Ge. obesa by an additional chamber in the final whorl and more lobulate periphery.
Synonym list:
Kennett & Srinivasan (1983):
1969 Hastigerina siphonifera praesiphonifera Blow. - Blow : p.408 pl 54 figs 7-9
Vincent & Toumarkine (1990):
1969 Hastigerina (Hastigerina) siphonifera praesiphonifera Blow. - Blow : p. 408 pl. 54, figs. 7-9
1990 Globigerinella praesiphonifera Blow. - Vincent & Toumarkine : p. 796
References:

Blow,W.H. (1969):
Late middle Eocene to Recent planktonic foraminiferal biostratigraphy.
In: Proceedings of the First International Conference on Planktonic Microfossils, Geneva 1967 Vol. 1 Eds: Bronnimann, P.Renz, H.H. p. 199-422

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
Anonymous: Unedited TaxonConcept data
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