Palaeomicula quadrisphena


Classification: Mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Palaeomicula -> Palaeomicula quadrisphena
Sister taxa: P. jacovidesii, P. maltica, P. quadrisphena,


Taxonomy:

Citation: Palaeomicula quadrisphena (Worsley 1971) Varol & Jakubowski 1989
Rank: Species
Basionym: Tetralithus quadrisphenus (Worsley 1971)
Notes & discussion: Elements sub rectangular wedge-shaped, arranged in spiral

Farinacci & Howe catalog pages: Tetralithus quadrisphenus * , ,

Geological Range:
Last occurrence (top): within Valanginian Stage (133.88-139.39Ma, top in Valanginian stage). Data source: Worsley 1971
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Worsley 1971

Plot of occurrence data:

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

    References:

    Worsley, T. R. (1971). Calcareous nannofossil zonation of Upper Jurassic and Lower Cretaceous sediments from the Western Atlantic. In, Farinacci, A. (ed.) Proceedings of the Second Planktonic Conference Roma 1971. Edizioni Tecnoscienza, Rome 2: 1301-1321. gs


    nannotaxlogo400px

    Palaeomicula quadrisphena compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-7-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10850 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