Tubodiscus jurapelagicus


Classification: Mesozoic -> Podorhabdales -> Tubodiscaceae -> Tubodiscus -> Tubodiscus jurapelagicus
Sister taxa: T. bellii, T. burnettiae, T. frankiae, T. jurapelagicus, T. verenae, T. sp.,

Distinguishing features: Large (8-16 µm) with wide central area. Inner and outer rim cycles of similar width.


Taxonomy:

Citation: Tubodiscus jurapelagicus (Worsley, 1971) Roth, 1973
Rank: Species
Basionym: Watznaueria jurapelagicus Worsley, 1971

Farinacci & Howe catalog pages: Watznaueria jurapelagicus *

Distinguishing features: Large (8-16 µm) with wide central area. Inner and outer rim cycles of similar width.


Morphology remarks: Similarly proportioned to M. pemmatoidea but is easily distinguished in the LM by its flaring collar, and the lack of ornament on its distal shield.

Search data:
TagsLITHS: placolith, elliptical, CA: vacant, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: rim-bicyclic,
MetricsLith size: 8->16µm;
Sources: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Barremian Stage (126.30-130.77Ma, top in Barremian stage). Data source: Bown et al. 1998
First occurrence (base): within Late Berriasian Substage (139.39-141.93Ma, base in Berriasian stage). Data source: Bown et al. 1998

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: Tubodiscus jurapelagicus, synonyms included - Tubodiscus jurapelagicus; Watznaueria jurapelagicus;
  • space-time plot :: Samples map :: Parent: Tubodiscus

    References:

    Bown, P. R. & Concheyro, A. (2004). Lower Cretaceous calcareous nannoplankton from the Neuquen Basin, Argentina. Marine Micropaleontology. 52(1-4): 51-84. gs

    Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program. Scientific Results. 198: 1-82. gs

    Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs

    Bralower, T. J., Monechi, S. & Thierstein, H. R. (1989). Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Marine Micropaleontology. 14: 153-235. gs

    Roth, P. H. (1973). Calcareous nannofossils: Leg 17 of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 17: 695-795. gs

    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

    Tubodiscus jurapelagicus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-2-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11276 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet on this page. Please do add comments if you spot any problems, or have information to share

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics