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Protentella prolixa Lipps 1964 from: Van Eijden, A.J.M.Smit, J. (1991): Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
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Species Protentella prolixa Lipps 1964


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test small, almost planispiral, involute, biumbilicate, equatorial periphery strongly lobulate; axial periphery broadly rounded; chambers initially spherical, later becoming ovate to radially elongate, five rapidly enlarging chambers in the final whorl; sutures radial, depressed; surface with regular reticulate pattern of ridges forming circular to subcircular or subhexagonal pore pits. Aperture basal, nearly equatorial, rather high arch, bordered by a distinct thick lip.
Discussion / Comments:
Kennett & Srinivasan (1983):
P. prolixa resembles Clavatorella bermudezi but differs in its somewhat smaller size, its more planispiral rather than trochospiral adult test, and its somewhat more thick- ened apertural lip.
Van Eijden & Smit (1991):
Remarks. Although P. prolixa is reportedly restricted to the upper Miocene and the Pliocene, we found specimens indistinguishable from this species in the upper Oligocene of Sites 757 and 758.
Systematics:

32
 Familia Globorotaliidae
  Genus Protentella
   Species Protentella prolixa
Synonym list:
Kennett & Srinivasan (1983):
1964 Protentella prolixa Lipps. - Lipps : p.124 pl 2 figs 8a-9c
Van Eijden & Smit (1991):
1964 Protentella prolixa Lipps. - Lipps : p.124 pl. 2, figs. 8-9
1991 Protentella prolixa Lipps. - Van Eijden & Smit : p.123 pl. 5, figs. 11-12
References:

Lipps,J.H. (1964):
Miocene planktonic foraminifera from Newport Bay, California . Tulane Studies in Geology Vol. 2 p. 109-133

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

Van Eijden,A.J.M. and Smit,J. (1991):
Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
Anonymous: Unedited TaxonConcept data
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