Nannotax3 - ntax_mesozoic - Nannoconus concavus

Nannoconus concavus


Classification: ntax_mesozoic -> Braarudosphaerales -> Nannoconaceae -> Nannoconus -> N. abundans group -> Nannoconus concavus
Sister taxa: N. abundans, N. alvus, N. borealis, N. concavus, N. inornatus, N. troelsenii


Taxonomy:

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

Farinacci & Howe catalog pages: N. concavus *

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: vacant, CROSS-POLARS: T-prominent,
MetricsLith size: 5->8µm;
Data source notes: 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 Early Valanginian Substage (136.41-139.39Ma, top in Valanginian 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:

References:

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

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

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Nannoconus concavus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-1-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10736 Go to Archive.is to create a permanent copy of this page - citation notes
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