Tubodiscus bellii


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

Distinguishing features: Medium sized (5-7 µm) with narrow shields / wide central area. In xpl the inner rim cycle is usually slightly narrower than the outer rim cycle


Taxonomy:

Citation: Tubodiscus bellii Bown, 2005
Rank: Species

Farinacci & Howe catalog pages: Tubodiscus bellii *

Distinguishing features: Medium sized (5-7 µm) with narrow shields / wide central area. In xpl the inner rim cycle is usually slightly narrower than the outer rim cycle


Morphology remarks: Medium sized (5-7 µm) Tubodiscus with narrow shields and wide, open, central area. The rim image is bicyclic in XPL and the two cycles have contrasting birefringence, the inner cycle being distinctly bright. The inner cycle is usually slightly narrower than the outer.

The shields and individual cycles are narrower than those of other tubodiscids.

Geological Range:
Last occurrence (top): within Berriasian Stage (139.39-145.01Ma, top in Berriasian stage). Data source: Bown 2005
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Bown 2005

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

    References:

    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


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    Tubodiscus bellii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-1-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11273 Go to Archive.is to create a permanent copy of this page - citation notes



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