Neogloboquadrina dutertrei d'Orbigny 1839 from: Vincent, E.Toumarkine, M. (1990): Neogene planktonic foraminifers from the Western Tropical Indian Ocean, Leg 115. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 115 Eds: Duncan, R.A..Backman, J.Peterson, L.C. p. 795-836 . |
Notice: This catalogue page may contain unedited data.
To find validated information on this taxon please visit the following project pages: |
Species Neogloboquadrina dutertrei d'Orbigny 1839 |
|
|
Diagnosis / Definition: |
Kennett & Srinivasan (1983):
Test globose, trochospiral, spire flat to slightly convex, five to six inflated chambers in the final whorl; sutures on spiral side almost radial to slightly curved, depressed;
on umbilical side almost radial, depressed;
surface uniformly moderately perforate, with distinct pore pits in tropical forms, pore pits partly or fully constricted by growth of euhedral calcite crystals in subtropical forms;
umbilicus open, moderately broad and deep;
aperture umbilical, umbilical-extraumbilical in young specimens; tooth-like umbilical plates often present. |
Discussion / Comments: |
Chaisson & Pearson (1997):
In Sample 154-925B-20H-5, 65-67cm, “humerosa,” “dutertrei,”
and “pseudopima” (cf. Bolli and Saunders, 1985) morphotypes can all be distinguished.
In Sample 154-925B-18H-5, 65-67 cm, neogloboquadrinids are rare, and the “humerosa” vs. the “dutertrei” morphotypes are distinguished by the greater angle of the trochospire in the latter. In Samples 154-925B-13H-3, 65-67cm, and 11H-5, 65-67 cm, “dutertrei” with apertural plates are observed. Specimens of “dutertrei” lacking apertural plates are observed in Sample 154-925B-10H-5, 65-67 cm. In Sample 154-925B-5H-6, 65-67 cm, six-chambered neogloboquadrinids have umbilical apertures and no apertural plates, thus combining the characteristics of “dutertrei” and “humerosa.”
Chaisson & Leckie (1993):
Similar species: In Hole 806B, the ranges of N. dutertrei andN. acostaensis
overlap from the top of Subzone N 17a to the middle of Zone N18/N19. N.
dutertrei has more inflated chambers, a coarser cancellate texture, and a more
open aperture. Its apertural flap, when present, rarely covers the aperture
completely (e.g., see Plate 8, Fig. 9). See N. humerosa. |
Systematics: |
1 Superregnum Eukaryota
Regnum Protoctista
Phylum Ciliophora
Subphylum Postciliodesmatophora
Ordo Globigerinida
Superfamilia Globorotaliaceae
Superfamilia Nonionacea
Familia Globorotaliidae
Genus Neogloboquadrina
Species Neogloboquadrina dutertrei
|
Synonym list: |
Kennett & Srinivasan (1983):
Chaisson & d'Hondt (2000):
Chaisson & Pearson (1997):
Vincent & Toumarkine (1990):
Chaisson & Leckie (1993):
|
References: |
d'Orbigny,A.D. (1839): Foraminifères. In: Histoire Physique, Politique et Naturelle de l'ile de Cuba2 (atlas vol 8 pls 1-12) Eds: de la Sagra, R. p. 1-224
Rhumbler,L. (1901): Nordische Plankton-Foraminiferen. In: Nordisches Plankton Vol. 1 Eds: Brandt, K. p. 1-33
Kennett,J. and Srinivasan,M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
Vincent,E. and Toumarkine,M. (1990): Neogene planktonic foraminifers from the Western Tropical Indian Ocean, Leg 115. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 115 Eds: Duncan, R.A..Backman, J.Peterson, L.C. p. 795-836
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
Chaisson,W.P. and Pearson,P.N. (1997): Planktonic foraminifer biostratigraphy at Site 925: middle Miocene–Pleistocene. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 154 Eds: Shackleton, N.J.Curry, W.B.Richter, C.Bralower, T.J.
Chaisson,W.P. and d'Hondt,S.L. (2000): Neogene planktonic foraminifer biostratigraphy at Site 999, Western Caribbean Sea. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 165 Eds: Leckie, R.M.Sigurdsson, H.Acton, G.D.Draper, G. p. 19-56
|
This work is licensed under a Creative Commons Attribution 2.5 License.
|
|