Owenia partitum


Classification: Mesozoic -> Holococcoliths -> Common genera -> Owenia -> Owenia partitum
Sister taxa: O. dispar, O. hillii, O. partitum, O. sp.,

Distinguishing features: Holococcolith with narrow birefringent rim and central plate comprising two blocks crossed by four diagonal cross bars that are brightest at 0 degrees. joined along a transverse suture. The blocks may be perforate.


Taxonomy:

Citation: Owenia partitum (Varol in Al-Rifaiy et al., 1990) Bown in Kennedy et al., 2000
Rank: Species
Basionym: Orastrum partitum Varol in Al-Rifaiy et al., 1990
Synonyms:

Farinacci & Howe catalog pages: Orastrum partitum * , ,

Distinguishing features: Holococcolith with narrow birefringent rim and central plate comprising two blocks crossed by four diagonal cross bars that are brightest at 0 degrees. joined along a transverse suture. The blocks may be perforate.


Size: Length 4.0-5.4µm, width 2.9-3.7µm, height 3-4µm.

Geological Range:
Last occurrence (top): within Early Cenomanian Substage (96.24-100.50Ma, top in Cenomanian stage). Data source: Kennedy et al. 2000
First occurrence (base): within Late Aptian Substage (112.95-122.98Ma, base in Aptian stage). Data source: Kennedy et al. 2000

Plot of occurrence data:

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

    References:

    Al-Rifaiy, I., Varol, O. & Lemone, D. (1990). Middle to late Albian biostratigraphy of the Cuchillo Formation from Sierra de Sapellò, Mexico. Newsletters on Stratigraphy. 21: 187-200. gs

    Bergen, J. A. (1998). Calcareous nannofossils from the lower Aptian historical stratotype at Cassis-La Bedoule (SE France). Géologie Méditerranéenne. 25(3-4): 227-255. gs

    Kennedy, W. J. et al. (2000). Integrated stratigraphy across the Aptian-Albian boundary in the Marnes Bleues, at the Col de Pre _-Guittard, Arnayon (Drome), and at Tartonne (Alpes-de-Haute-Provence), France: a candidate Global Boundary Stratotype Section and Boundary Point for the base of the Albian Stage. Cretaceous Research. 21: 591-720. gs


    nannotaxlogo400px

    Owenia partitum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-7-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10843 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