Spezzaferri & Silva (1990):
In our material in
addition to typical "G."woodi, which has four
chambers in the last whorl and a wide-arched
aperture occasionally with a thin lip, there are rare
forms plotted as "Globigerina" sp. characterized by
three to three and a half chambers in the last
whorl, a subrectangular profile, and a mediumsized,
low-arched aperture. They appear to be
related to "G." woodi s. str.
Chaisson & Leckie (1993):
Remarks: This is typically a temperate-water species that ranges into the
tropics, but it is persistently present at Site 806.
Similar species: Globigerina woodi can be distinguished from G. apertura
by its smaller aperture. Its chambers tend to be more embracing than those of
G. apertura and that species tends to have a slightly higher trochospire. It is
distiniguished from G. praebulloides and G. bulloides by its cancellate test
wall and presence of a distinct apertural rim. Chaproniere (1988) describes
great variation in G. woodi and illustrates specimens that are very similar to G. apertura (his plate 1, fig. 26), G. brazieri (his plate 1, figs. 11 and 17), and
G. praebulloides (his plate 2, figs. 23 and 26). We also observed considerable
variation in the overall size and shape of the aperture in specimens of G. woodi
from Site 806.
Quilty (1976):
Remarks: The specimens identified here are very similar to G. W. Woodi, but the aperture is a lower arch without any trace of lip or rim.
It occurs here almost at the youngest end of the world range recorded by Jenkins (1971). |
Jenkins,D.G. (1960):
Planktonic foraminifers from the Lakes Entrance oil shaft, Victoria, Australia . Micropaleontology Vol. 6(4) p. 345-371
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
Quilty,P.G.. (1976):
Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34
Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
Chaproniere,G.C.H. (1988):
Globigerina woodi from the late Oligocene and early Miocene of southeastern Australia . J. Foraminiferal Res. Vol. 18(2) p. 124-129
Spezzaferri,S. and Silva,I.S.. (1990):
Oligocene planktonic foraminiferal biostratigraphy and paleoclimatic interpretation from Hole 538A, DSDP Leg 77, Gulf of Mexico . Palaeogeography, Palaeoclimatology, Palaeoecology Vol. 83 p. 217-263
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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