Nannoconus grandis

Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. circularis group -> Nannoconus grandis
Sister taxa: N. carniolensis, N. circularis, N. fragilis, N. grandis, N. quadratus,

Distinguishing features: tall (>10 microns), tapering, narrowing at both ends (height ~2x width).


Citation: Nannoconus grandis Deres and Achéritéguy, 1980
Rank: Species

Farinacci & Howe catalog pages: Nannoconus grandis *

Distinguishing features: tall (>10 microns), tapering, narrowing at both ends (height ~2x width).

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: vacant, T-UNITS: T-prominent,
MetricsLith size: 24->29µm;
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 Early Aptian Substage (122.98-126.30Ma, top in Aptian stage). Data source: Perch-Nielsen 1985
First occurrence (base): within Barremian Stage (126.30-130.77Ma, base in Barremian stage). Data source: Perch-Nielsen 1985

Plot of occurrence data:

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


    Deres, F. & Achéritéguy, J. (1980). Biostratigraphie des Nannoconides. Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine. 4: 1-53. gs :: ::

    Jeremiah, J. (1996). A proposed Albian to Lower Cenomanian nannofossil biozonation for England and the North Sea Basin. Journal of Micropalaeontology. 15(97-129): -. gs :: view :: open


    Nannoconus grandis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-7-2020

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    Short stable page link: Go to to create a permanent copy of this page - citation notes

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