JRYSEM-171-55p.JPG
Breheret78 pl2-5.JPG
CRAK003.JPG
CRAK004.JPG
JRYSEM-275-05.JPG
JRYSEM-275-09.JPG
JRYSEM_171-55.jpg
Matsuoka Okada 1989 pl1-07.JPG
Matsuoka Okada 1989 pl1-18.JPG
Matsuoka Okada1990 pl4-03.JPG
Matsuoka Okada1990 pl4-04.JPG
Samtleben 1980 f14-09.JPG
Samtleben 1980 f14-10.JPG
Samtleben 1980 f14-11.JPG
Samtleben 1980 f14-12.JPG
Samtleben 1980 f14-13.JPG
Samtleben 1980 f14-14.JPGTaxonomy:
In modern literature the name is primarily applied to medium to large forms with a closed central area in the Middle Pleistocene, but it is also often used for simlar Gephyrocapsa coccoliths with a closed central area from the Early Pleistocene.
Distinguishing features: Large to medium sized species of Gephyrocapsa; bridge at intermediate angle to short axis, and low (typically almost flush with the shield); central area almost closed.
Farinacci & Howe catalog pages: G. caribbeanica + *
Search data:| Tags | LITHS: placolith, elliptical, CA: ca_conjunct, grill, bar, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent, |
| Metrics | Lith size: 3->5µm; |
Geological Range:
Notes: G. caribbeanica typically dominates Middle Pleistocene assemblages from MIS8 to MIS13 or 14 (e.g. Hine & Weaver 1998, Bollmann et al. 1998, Baumann & Freitag 2004). The end of this dominance in MIS8 appears to be a more abrupt and less diachronous event than the beginning. This episode is most obvious at temperate latitudes.
Last occurrence (top): within MIS-7 Isotope stage (0.21-0.25Ma, top in Ionian stage). Data source: Hine & Weaver 1998
First occurrence (base): within NN19 zone (0.44-1.93Ma, base in Gelasian stage). Data source: [JRY rough estimate]
Plot of occurrence data:
Baumann, K. -H. & Freitag, T. (2004). Pleistocene fluctuations in the northern Benguela Current system as revealed by coccolith assemblages. In, Villa, G., Lees, J. A. & Bown, P. R. (eds) Calcareous Nannofossil Palaeoecology and Palaeocenographic Reconstructions, Proceedings of the INA9 conference, Parma 2002. Marine Micropaleontology. 52(1-4): 195-215. gs Bollmann, J., Baumann, K. -H. & Thierstein, H. R. (1998). Global dominance of Gephyrocapsa coccoliths in the late Pleistocene: Selective dissolution, evolution, or global environmental change? Paleoceanography. 13(5): 517-529. gs Bréhéret, J. G. (1978). Formes nouvelles quaternaries et actualles de la famille des Gephyrocapsaceae (Cocolithophorides). Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris, Série D - Sciences Naturelles. 287: 447-449. gs V O Hay, W. W., Mohler, H. P., Roth, P. H., Schmidt, R. R. & Boudreaux, J. E. (1967). Calcareous nannoplankton zonation of the Cenozoic of the Gulf Coast and Caribbean-Antillean area, and transoceanic correlation. Transactions of the Gulf-Coast Association of Geological Societies. 17: 428-480. gs V O Hine, N. & Weaver, P. P. E. (1998). Quaternary. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 266-283. gs Matsuoka, H. & Okada, H. (1989). Quantitative analysis of Quaternary nannoplankton in the subtropical Northwestern Pacific Ocean. Marine Micropaleontology. 14: 97-118. gs Matsuoka, H. & Okada, H. (1990). Time-progressive morphometric changes of the genus Gephyrocapsa in the Quaternary sequence of the tropical Indian Ocean, Site 709. Proceedings of the Ocean Drilling Program, Scientific Results. 115: 255-270. gs V O Samtleben, C. (1980). Die Evolution der Coccolithophoriden-Gattung Gephyrocapsa nach Befunden im Atlantik. Paläontologische Zeitschrift. 54: 91-127. gsReferences:
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Gephyrocapsa caribbeanica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-3-2021
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