Cretarhabdus inaequalis


Classification: Mesozoic -> Podorhabdales -> Cretarhabdaceae -> Cretarhabdus -> Cretarhabdus inaequalis
Sister taxa: C. conicus, C. inaequalis, C. madingleyensis, C. striatus, C. sp.,

Distinguishing features: Small (3-6 µm) Cretarhabdus with an irregular central grill. The bars of the grill are distinctly birefringent in XPL.


Taxonomy:

Citation: Cretarhabdus inaequalis Crux, 1987
Rank: Species

Farinacci & Howe catalog pages: Cretarhabdus inaequalis *

Distinguishing features: Small (3-6 µm) Cretarhabdus with an irregular central grill. The bars of the grill are distinctly birefringent in XPL.

Search data:
TagsLITHS: placolith, elliptical, CA: grill, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 3->6µm;
Sources: original description +/- 0.5 µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Bown et al. 1998
First occurrence (base): in mid part of BC9 zone (50% up, 133Ma, in Hauterivian stage). Data source: Bown et al. 1998, fig. 5.1

Plot of occurrence data:

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

    References:

    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 :: ::

    Crux, J. A. (1987). Six new species of calcareous nannofossils from the Lower Cretaceous strata of England and Germany. INA Newsletter. 9: 30-35. gs :: view :: open

    Jeremiah, J. (1996). A proposed Albian to Lower Cenomanian nannofossil biozonation for England and the North Sea Basin. Journal of Micropalaeontology. 15(97-129): -. gs :: view :: open


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    Cretarhabdus inaequalis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 10-7-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10301 Go to Archive.is to create a permanent copy of this page - citation notes



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