Stephanolithion bigotii subsp. bigotii


Classification: Mesozoic -> Stephanolithiales -> Stephanolithiaceae -> Stephanolithion -> Stephanolithion bigotii -> Stephanolithion bigotii subsp. bigotii
Sister taxa: S. bigotii subsp. bigotii, S. bigotii subsp. maximum,

Distinguishing features: Polygonal Stephanolithion (elongated hexagon) with six (sometimes 7-8) long rim spines and central area spanned by diagonal cross bars.


Taxonomy:

Citation: Stephanolithion bigotii subsp. bigotii Deflandre, 1939
Rank: Sub-species
Basionym: Stephanolithion bigoti Deflandre, 1939
Notes & discussion: Separated as sub-species by Medd 1979

Farinacci & Howe catalog pages: Stephanolithion bigoti bigoti * ,

Distinguishing features: Polygonal Stephanolithion (elongated hexagon) with six (sometimes 7-8) long rim spines and central area spanned by diagonal cross bars.

Geological Range:
Last occurrence (top): at top of NJ17a subzone (100% up, 149.1Ma, in Tithonian stage). Data source: Bown & Cooper 1998 (fig 4) - zonal eventBown & Cooper 1998
First occurrence (base): at base of NJ13 zone (0% up, 164.8Ma, in Callovian stage). Data source: Bown & Cooper 1998 (fig 4) - zonal event

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: Stephanolithion bigotii subsp. bigotii, synonyms included - Stephanolithion bigotii; Stephanolithion bigotii bigotii; Stephanolithion bigotii subsp. bigotii; space-time plot :: Samples map :: Parent: Stephanolithion bigotii

    References:

    Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

    Deflandre, G. (1939). Les stéphanolithes, représentants d'un type nouveau de coccolithes Jurassique supérieur. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences. Paris. 208: 1331-1333. gs

    Medd, A. W. (1979). The Upper Jurassic coccoliths from the Haddenham and Gamlingay boreholes (Cambridgeshire, England). Eclogae Geologicae Helvetiae. 72: 19-109. gs


    nannotaxlogo400px

    Stephanolithion bigotii subsp. bigotii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-7-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11149 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics