Stephanolithion hexum


Classification: Mesozoic -> Stephanolithiales -> Stephanolithiaceae -> Stephanolithion -> Stephanolithion hexum
Sister taxa: S. atmetos, S. bigotii, S. brevispinus, S. hexum, S. speciosum, S. sp.,

Distinguishing features: Elliptical Stephanolithion with multiple rim spines and central area spanned by six cross bars.


Taxonomy:

Citation: Stephanolithion hexum Rood & Barnard, 1972
Rank: Species

Farinacci & Howe catalog pages: Stephanolithion hexum * , ,

Distinguishing features: Elliptical Stephanolithion with multiple rim spines and central area spanned by six cross bars.

Geological Range:
Last occurrence (top): within NJ13 zone (163.64-164.79Ma, top in Callovian stage). Data source: Bown & Cooper 1998
First occurrence (base): at base of NJ12a subzone (0% up, 166.4Ma, in Bathonian stage). Data source: Bown & Cooper 1998 (fig. 4) - secondary events

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Stephanolithion

    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

    Rood, A. P. & Barnard, T. (1972). On Jurassic coccoliths: Stephanolithion, Diadozygus and related genera. Eclogae Geologicae Helvetiae. 65: 327-342. gs


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    Stephanolithion hexum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11152 Go to Archive.is to create a permanent copy of this page - citation notes



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