Similiscutum orbiculus


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Similiscutum -> Similiscutum orbiculus
Sister taxa: S. avitum, S. cruciulus, S. finchii, S. novum, S. orbiculus, S. precarium, S. sp.,

Distinguishing features: Small, subcircular to circular, biscutacean placolith with narrow to closed central-area.


Taxonomy:

Citation: Similiscutum orbiculus de Kaenel & Bergen, 1993
Rank: Species

Farinacci & Howe catalog pages: Similiscutum orbiculus * , ,

Distinguishing features: Small, subcircular to circular, biscutacean placolith with narrow to closed central-area.

Geological Range:
Last occurrence (top): within Early Toarcian Substage (178.24-182.70Ma, top in Toarcian stage). Data source: de Kaenel & Bergen 1993
First occurrence (base): within NJ5a subzone (184.03-185.53Ma, base in Pliensbachian stage). Data source: de Kaenel & Bergen 1993

Plot of occurrence data:

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

    References:

    de Kaenel, E. & Bergen, J. A. (1993). New Early and Middle Jurassic coccolith taxa and biostratigraphy from the eastern proto-Atlantic (Morocco, Portugal and DSDP Site 547B). Eclogae Geologicae Helvetiae. 86(861-907): -. gs


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    Similiscutum orbiculus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11088 Go to Archive.is to create a permanent copy of this page - citation notes



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