Crucibiscutum pinnatus


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Crucibiscutum -> Crucibiscutum pinnatus
Sister taxa: C. hayi, C. neuquenensis, C. pinnatus, C. ryazanicum, C. salebrosum, C. sp., C. trilensis,

Distinguishing features: Small Crucibiscutum with central cross that is only weakly birefringent and does not fill the central area, delineating four perforations that are clearly visible in XPL.


Taxonomy:

Citation: Crucibiscutum pinnatus (Black, 1971) Rutledge & Bown in Bown et al., 1998
Rank: Species
Basionym: Cruciplacolithus pinnatus Black, 1971
Synonyms: Sollasites pinnatus

Farinacci & Howe catalog pages: Cruciplacolithus pinnatus * , ,

Distinguishing features: Small Crucibiscutum with central cross that is only weakly birefringent and does not fill the central area, delineating four perforations that are clearly visible in XPL.

Geological Range:
Last occurrence (top): within Early Barremian Substage (129.41-130.77Ma, top in Barremian stage). Data source: Bown et al. 1998
First occurrence (base): within Hauterivian Stage (130.77-133.88Ma, base in Hauterivian stage). Data source: Bown et al. 1998

Plot of occurrence data:

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

    References:

    Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. 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


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    Crucibiscutum pinnatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-7-2019

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