Gephyrocapsa caribbeanica


Classification: Coccolithophores -> Isochrysidales -> Noelaerhabdaceae -> Gephyrocapsa -> Gephyrocapsa caribbeanica
Sister taxa: G. oceanica, G. muellerae, G. ornata, G. ericsonii, G. sp elevated bridge, G. caribbeanica, G. omega, G. lumina, G. small, G. sp.,

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.


Taxonomy:

Citation: Gephyrocapsa caribbeanica Boudreaux & Hay, in Hay et al. 1967
Rank: Species
Notes & discussion: In some older literature the name G. caribbeanica was applied to large Early Pleistocene Gephyrocapsa specimens, I.e. to G. lumina in modern usage. This is inappropriate as the type specimen was from the Late Pleistocene. The name G. caribbeanica was also used in some early plankton literature (up to about 1990), this usually refers to G. muellerae.
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.

Farinacci & Howe catalog pages: Gephyrocapsa caribbeanica + *

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.

Search data:
TagsLITHS: placolith, elliptical, RIM: inner-tube-broad, CA: bridge, bridge-diagonal, grill,
CSPH: spherical, monomorphic, V-UNITS: none, R-UNITS: all, c-str, distal shield, prox shield, tube, DETAILS: ca_conjunct, isogyres kinked, isogyres oblique, rim-unicyclic,
MetricsLith size: 3->5µm;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

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:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Taxon plotted: Gephyrocapsa caribbeanica, synonyms included - Gephyrocapsa caribbeanica; Gephyrocapsa caribbeanica (3-4 microns); Gephyrocapsa caribbeanica (4-5.5 microns); Gephyrocapsa caribbeanica (>5.5 microns); Gephyrocapsa caribbeanica (large); Gephyrocapsa caribbeanica (4-5 µm); Gephyrocapsa caribbeanica (5-6 µm); space-time plot :: Samples map :: Parent: Gephyrocapsa

    References:

    Baumann, K.-H. & Freitag, T., (2004). Pleistocene fluctuations in the northern Benguela Current system as revealed by coccolith assemblages. Marine Micropaleontology, 52(1-4): 195–215.

    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.

    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.

    Hine, N. & Weaver, P.P.E., (1998). Quaternary. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 266-283.


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    Gephyrocapsa caribbeanica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-12-2018

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    Comments (1)

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    Hanjie

    Could you tell me whether Gephyrocapsa carribeanica extant or extinct in modern ocean? In this page, I can see the last occurrence of G.caribbeanica was in MIS7. However, the information found from "Farinacci" in the menu bar is like this—Type level: Latest Pliocene-Recent. Which is right?

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    Jeremy Young (Tonbridge, UK)

    G. caribbeanica is extinct. The information in the type catalog is that given in the original publication (in this case written in 1967) and will often have been improved upon (as in this case). The information in the main database (this page) is the best currently available. See the "about Nannotax" pages for more explanation.

    Jeremy

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