Sphenolithus cometa


Classification: Coccolithophores -> Discoasterales -> Sphenolithaceae -> Sphenolithus -> S. capricornutus group -> Sphenolithus cometa
Sister taxa: S. capricornutus, S. cometa, S. multispinatus,

Taxonomy:

Citation: Sphenolithus cometa de Kaenel & Villa 1996
Rank: Species

Distinguishing features: Narrow proximal shield and apical spine with slightly diverging elements

Farinacci & Howe catalog pages: Sphenolithus cometa *

Search data:
TagsLITHS: nannolith-radiate, N: 3D-radiate, conical, circular, RIM: tiered,
CSPH: not known, V-UNITS: none, R-UNITS: all, lower-tier, spine, middle-tier, DETAILS: isogyres radial,
MetricsLith size: 5->10µm;
Sources: lith height from OD and illustrated specs
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NN2 zone (19.00-22.82Ma, top in Burdigalian stage). Data source: Maiorano & Monechi 1997
First occurrence (base): within NN2 zone (19.00-22.82Ma, base in Aquitanian stage). Data source: Maiorano & Monechi 1997

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
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Sphenolithus cometa, synonyms included - Sphenolithus cometa; space-time plot :: Samples map :: Parent: S. capricornutus group

    References:

    Bergen, J. A., de Kaenel, E., Blair, S. A., Boesiger, T. M. & Browning, E. (2017). Oligocene-Pliocene taxonomy and stratigraphy of the genus Sphenolithus in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154. Journal of Nannoplankton Research. 37(2-3): 77-112. gs

    de Kaenel, E. & Villa, G. (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program. Scientific Results. 149: 79-145. gs

    Maiorano, P. & Monechi, S. (1997). New Early Miocene species of Sphenolithus Deflandre, 1952 from the North Atlantic Ocean. Journal of Nannoplankton Research. 19(2): 103-107. gs

    Maiorano, P. & Monechi, S. (1998). Revised correlations of early and middle Miocene calcareous nannofossil events and magnetostratigraphy from DSDP Site 563 (North Atlantic Ocean). Marine Micropaleontology. 35(235-255): -. gs


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    Sphenolithus cometa compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-9-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1290 Go to Archive.is to create a permanent copy of this page - citation notes



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