Polycostella senaria


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Polycostella -> Polycostella senaria
Sister taxa: P. senaria, P. infans, P. beckmannii, P. parvistellatus, P. sp.,

Distinguishing features: Medium-sized (5-8 µm) with 6 segments


Taxonomy:

Citation: Polycostella senaria Thierstein, 1971
Rank: Species
Synonyms:

Farinacci & Howe catalog pages: Polycostella senaria *

Distinguishing features: Medium-sized (5-8 µm) with 6 segments

Geological Range:
Last occurrence (top): within Early Berriasian Substage (143.57-145.01Ma, top in Berriasian stage). Data source: Bown & Cooper 1998
First occurrence (base): in lower part of NJ17b subzone (20% up, 148.9Ma, in Tithonian stage). Data source: Bown & Cooper 1998 (fig. 4) - secondary events

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: Polycostella senaria, synonyms included - Polycostella senaria; space-time plot :: Samples map :: Parent: Polycostella

    References:

    Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

    Thierstein, H. R. (1971). Tentative Lower Cretaceous Calcareous Nannoplankton Zonation. Eclogae Geologicae Helvetiae. 64: 459-488. gs


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    Polycostella senaria compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-8-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10925 Go to Archive.is to create a permanent copy of this page - citation notes



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