Mazaganella protensa


Classification: Mesozoic -> Podorhabdales -> Mazaganellaceae -> Mazaganella -> Mazaganella protensa
Sister taxa: M. protensa, M. pulla, M. sp.,

Distinguishing features: Mazaganella with a narrow rim, elevated distal shield, distinct inner cycle and a central area axial cross that bears a hollow spine. Bicyclic rim image in XPL.


Taxonomy:

Citation: Mazaganella protensa Bown, 1987
Rank: Species
Synonyms: Triscutum protensum

Farinacci & Howe catalog pages: Mazaganella protensa *

Distinguishing features: Mazaganella with a narrow rim, elevated distal shield, distinct inner cycle and a central area axial cross that bears a hollow spine. Bicyclic rim image in XPL.


Morphology remarks: Tethyan biogeographic distribution.

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, process, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-bicyclic, rim-unicyclic,
MetricsLith size: 5->7┬Ám;
Sources: original description
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Pliensbachian Stage (182.70-190.82Ma, top in Pliensbachian stage). Data source: Bown & Cooper 1998
First occurrence (base): within Pliensbachian Stage (182.70-190.82Ma, base in Pliensbachian stage). Data source: Bown & Cooper 1998

Plot of occurrence data:

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

    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 :: ::

    Bown, P. R. (1987). Taxonomy, evolution, and biostratigraphy of Late Triassic-Early Jurassic calcareous nannofossils. Special Papers in Palaeontology. 38: 1-118. gs :: ::


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    Mazaganella protensa compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-7-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10645 Go to Archive.is to create a permanent copy of this page - citation notes



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