Biscutum constans spp. cavum


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Biscutum -> Biscutum constans -> Biscutum constans spp. cavum
Sister taxa: B. constans spp. cavum,

Distinguishing features: A large, elliptical Biscutum with a large central opening


Taxonomy:

Citation: Biscutum constans ssp. cavum Jeremiah 2001
Rank: sub-species

Farinacci & Howe catalog pages: Biscutum constans cavum *

Distinguishing features: A large, elliptical Biscutum with a large central opening


Size: 4.5–6.5 _m long (mean length 5 _m), 50 specimens measured (Jeremiah 2001)

Geological Range:
Notes: Biscutum constans cavum is characteristic of uppermost Barremian strata from throughout the North Sea Basin. Jeremiah (2001).
Last occurrence (top): within Late Barremian Substage (126.30-129.41Ma, top in Barremian stage). Data source: Jeremiah 2001
First occurrence (base): within Late Barremian Substage (126.30-129.41Ma, base in Barremian stage). Data source: Jeremiah 2001

Plot of occurrence data:

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

    References:

    Jeremiah, J. (2001). A Lower Cretaceous nannofossil zonation for the North Sea Basin. Journal of Micropalaeontology. 20: 45-80. gs


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    Biscutum constans spp. cavum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-11-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10071 Go to Archive.is to create a permanent copy of this page - citation notes



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