Iaccarino (1985):
This species, evolving from G. druryi, was originally described as a subspecies of that species, having a larger, higher arched aperture with a thickened rim instead of a thin lip and a low to very high spire. The morphologic features of G. decoraperta make it an easily recognizable taxon. Nevertheless it has been seen to show a great variability: high to moderately high arched aperture, low to high troehospire, thickened to thin rim. Also, in size this taxon varies remarkably.
In the Late Pliocene G. decoraperta seems to evolve into G. rubescens. In fact, G. decoraperta is well documented from Middle Miocene to Late Pliocene but is never recorded from the Pleistocene.
Srinivasan (1975):
Specimens similar to Globigerina druryi but
having a larger, arched aperture and high trochospire
are included in this species.
Chaisson & Leckie (1993):
Remarks: Sensu stricto forms of Globigerina decoraperta are rare at this site.
Similar species: This species resembles a high trochospire morphotype of
Globigerina apertura. |
Takayanagi,Y. and Saito,T. (1962): Planktonic foraminifers from the Nobori Formation, Shikoku, Japan. . Science Reports of the Tohoku University Serie 2 Vol. 5 p. 67-106
Srinivasan,M.S. (1975): Middle Miocene Planktonic Foraminifera from the Hut Bay Formation, Little Andaman Island, Bay of Bengal . Micropaleontology Vol. 21(2) p. 133-150
Kennett,J. and Srinivasan,M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
Iaccarino,S. (1985): Mediterranean Miocene and Pliocene planktic foraminifera. In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 283-314
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
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