Nannoconus oviformis


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. kamptneri group -> Nannoconus oviformis
Sister taxa: N. aquitanicus, N. boletus, N. bonetii, N. bronnimannii, N. bucheri, N. calpidomorphus, N. colomii, N. dauvillieri, N. dislocatus, N. globulus, N. kamptneri, N. oviformis, N. vocontiensis, N. wassallii, N. wintereri,

Distinguishing features: Large, ovoid nannoconid with wide central cavity and coarse, high-angle wall cycles.


Taxonomy:

Citation: Nannoconus oviformis Perch-Nielsen, 1988
Rank: Species

Farinacci & Howe catalog pages: Nannoconus oviformis *

Distinguishing features: Large, ovoid nannoconid with wide central cavity and coarse, high-angle wall cycles.


Ecology & Biogeography: Described from the North Sea Basin.

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: vacant, T-UNITS: T-prominent,
MetricsLith size: 11->17µm;
Sources: illustrated specimens
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: Perch-Nielsen 1988
First occurrence (base): within Late Berriasian Substage (139.39-141.93Ma, base in Berriasian stage). Data source: Perch-Nielsen 1988

Plot of occurrence data:

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

    References:

    Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs :: ::

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

    Perch-Nielsen, K. (1988). New Lower Cretaceous calcareous nannofossil species from England. INA Newsletter. 10(1): 30-37. gs :: view :: open


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    Nannoconus oviformis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-7-2020

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10764 Go to Archive.is to create a permanent copy of this page - citation notes



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