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Globorotalia pseudopima Blow 1969 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
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Species Globorotalia pseudopima Blow 1969


Discussion / Comments:
Bolli & Saunders (1985):
Compared with 4-chambered G. acostaensis the test of G. pseudopima is distinctly larger and the wall more robust and with coarser pores. The umbilicus is nearly closed in typical specimens. Forms transitional towards N. dutertrei display a more open umbilicus and a tendency for the apertures of the last chamber to become more umbilical. Except for their distinctly different stratigraphic ranges and different accompanying fauna, G. pseudopima and the Oligocene G. opima opima are difficult to distinguish from each other. Both possess usually 4, more rarely 4 1/2-5 robust and inflated chambers in the last whorl, with about equally sized and spaced pores. For comparison with G. opima opima see Figs. 26.24-30.
Synonym list:
Bolli & Saunders (1985):
1969 Globorotalia (Turborotalia) acostaensis pseudopima Blow. - Blow : p.387 pl.35, figs.1-3
1985 Globorotalia pseudopima Blow. - Bolli & Saunders : 208, 209 figs. 27.7, 28.10-12; 6,10,11
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

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
Anonymous: Unedited TaxonConcept data
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