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Nannotax3 - ntax_mesozoic - Retecapsa beckii Nannotax3 - ntax_mesozoic - Retecapsa beckii

Retecapsa beckii


Classification: ntax_mesozoic -> Podorhabdales -> Cretarhabdaceae -> Retecapsa -> Retecapsa beckii
Sister taxa: R. incompta ⟩⟨ R. angustiforata, R. beckii, R. octofenestrata, R. schizobrachiata ⟩⟨ R. crenulata, R. surirella, R. escaigii ⟩⟨ R. ficula, R. sp.

Distinguishing features:
Parent taxon (Retecapsa): Cretarhabdids with central area spanned by an axial cross with lateral bars.
This taxon: Small (4-5 µm) cretarhabdids with 1 lateral bar per quadrant


Taxonomy:

Citation: Retecapsa beckii (Medd, 1979) Young & Bown 2014
Taxonomic rank: species
Basionym: Polypodorhabdus beckii Medd, 1979

Farinacci & Howe catalog pages: P. beckii *

Distinguishing features:
Parent taxon (Retecapsa): Cretarhabdids with central area spanned by an axial cross with lateral bars.
This taxon: Small (4-5 µm) cretarhabdids with 1 lateral bar per quadrant

Search data:
LITHS: placolith, elliptical, CA: cross-axial, grill, process, ca_disjunct, CROSS-POLARS: R-prominent, rim-unicyclic,
Lith size: 4->5µm;
Data source notes: holotype +/- 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 Oxfordian Stage (154.78-161.50Ma, top in Oxfordian stage). Data source: Medd 1979
First occurrence (base): within Oxfordian Stage (154.78-161.50Ma, base in Oxfordian stage). Data source: Medd 1979

Plot of occurrence data:

References:

Medd, A. W. (1979). The Upper Jurassic coccoliths from the Haddenham and Gamlingay boreholes (Cambridgeshire, England). Eclogae Geologicae Helvetiae. 72: 19-109. gs O

Young, J. R. & Bown, P. R. (2014). Some emendments to calcareous nannoplankton taxonomy. Journal of Nannoplankton Research. 33(1): 39-46. gs


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Retecapsa beckii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-3-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10998 Go to Archive.is to create a permanent copy of this page - citation notes
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