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Species Globigerinoides parawoodi Keller 1981


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test low trochospire, chambers spherical to ovate, four in the final whorl;distinct radial sutures on both umbilical and spiral sides, depressed, surface coarsely pitted as in Globigerina (Zeaglobigerina) woodi; primary aperture a medium-sized arch, interiomarginal, umbilical, with a distinct rimlike margin; one small supplementary aperture at the suture junction between the ultimate and penultimate chambers.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gs. parawoodi is similar to Globigerina (Zeaglobigerina) woodi in all aspects except for the development of a small supplementary aperture. This species differs from Gs. altiapertura by its small, single supplementary aperture, generally smaller primary aperture, and smaller test size. Gs. bollii is distinguished from Gs. parawoodi by its heavily encrusted and more compact test and by possessing more than one supplementary aperture.
Chaisson & Leckie (1993):
Remarks: This is another possible ecophenotype rather than a species that, by acquiring a secondary aperture, is recognized as a "species" of Globigerinoides. Similar species: This species looks like a Globigerina woodi with a single small secondary aperture opposite the primary aperture. Globigerinoides parawoodi is distinguished from early forms of G. obliquus by possessing a more circular primary aperture.
Synonym list:
Kennett & Srinivasan (1983):
1981 Globigerinoides parawoodi Keller. - Keller : p.304 pl 4 figs 1-11
Chaisson & Leckie (1993):
1981 Globigerinoides parawoodi Keller. - Keller : p.304 pl. 4; fig. 11
1983 Globigerinoides parawoodi Keller. - Kennett & Srinivasan : p.73 pl. 15; fig. 1-3
References:

Keller,G. (1981):
Origin and evolution of the genus Globigerinoides in the Early Miocene of the northwestern Pacific Site 292 . Micropaleontology Vol. 27(3) p. 293-304

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

Chaisson,W.P. and Leckie,R.M. (1993):
High-Resolution Planktonic Foraminifer Biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific).
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 130 Eds: Berger, W.H.Kroenke, L.W..Mayer, L.A..et al. p. 137-178
Anonymous: Unedited TaxonConcept data
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