Nannoconus cornuta


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. truitti group -> Nannoconus cornuta
Sister taxa: N. cornuta, N. donnatensis, N. elongatus, N. inconspicuus, N. longus, N. minutus, N. multicadus, N. planus, N. quadriangulus, N. quadricanalis, N. truittii,

Distinguishing features: Quadriangular with horns and bosses on the outer wall.


Taxonomy:

Citation: Nannoconus cornuta Deres & Achéritéguy 1980
Rank: Species

Farinacci & Howe catalog pages: N. cornuta *

Distinguishing features: Quadriangular with horns and bosses on the outer wall.

Search data:
Tagsnannolith-radiate, circular, cylindrical, hollow, CA: vacant, T-UNITS: T-prominent,
MetricsLith size: 10->15µm;
Data source notes: original description
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 Hauterivian Stage (130.77-133.88Ma, top in Hauterivian stage). Data source: Perch-Nielsen 1985
First occurrence (base): within Valanginian Stage (133.88-139.39Ma, base in Valanginian stage). Data source: Perch-Nielsen 1985

Plot of occurrence data:

References:

Bralower, T. J., Monechi, S. & Thierstein, H. R. (1989). Calcareous nannofossil zonation of the Jurassic-Cretaceous boundary interval and correlation with the geomagnetic polarity timescale. Marine Micropaleontology. 14: 153-235. gs

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

Jeremiah, J. (2001). A Lower Cretaceous nannofossil zonation for the North Sea Basin. Journal of Micropalaeontology. 20(1): 45-80. gs V O


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Nannoconus cornuta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-9-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10737 Go to Archive.is to create a permanent copy of this page - citation notes



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