Nannoconus magnadiscus


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> Nannoconus - atypical -> Nannoconus magnadiscus
Sister taxa: N. funiculus, N. ligius, N. magnadiscus, N. nicholasii, N. pseudoseptentrionalis, N. sabinae,

Distinguishing features: Large (>10 µm), flat species - disk-shaped


Taxonomy:

Citation: Nannoconus magnadiscus Varol & Bowman 2019
Rank: Species

Farinacci & Howe catalog pages: Nannoconus magnadiscus [no catalog entry yet]

Distinguishing features: Large (>10 µm), flat species - disk-shaped


Morphology remarks: Nannoconus magnadiscus is always observed in plan view due to the its low height (<3.0μm). It has a moderately thin wall cycle with a high-angle and very narrow canal which is often not visible. [Varol & Bowman 2019]

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: vacant, T-UNITS: T-prominent,
MetricsLith size: 10->15µm;
Sources: min size - original description; max size - guess
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Late Berriasian Substage (139.39-141.93Ma, top in Berriasian stage). Data source:
First occurrence (base): within Late Tithonian Substage (145.01-147.72Ma, base in Tithonian stage). Data source:

Plot of occurrence data:

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

    References:

    Varol, O. & Bowman, A. R. (2019). Taxonomic revision of selected Late Jurassic (Tithonian) calcareous nannofossils and the application of mobile mounting. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen. 291: 65-87. gs


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    Nannoconus magnadiscus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-4-2020

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11369 Go to Archive.is to create a permanent copy of this page - citation notes



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