Nannotax3 - ntax_mesozoic - Farhania varolii

Farhania varolii


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Farhania -> Farhania varolii
Sister taxa: F. varolii, F. sp.

Distinguishing features:
Parent taxon (Farhania): Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.
This taxon: Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.


Taxonomy:

Citation: Farhania varolii (Jakubowski, 1986) Varol, 1992
Rank: Species
Basionym: Eprolithus varolii Jakubowski, 1986

Farinacci & Howe catalog pages: E. varolii *

Distinguishing features:
Parent taxon (Farhania): Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.
This taxon: Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.


Morphology:


Size:

Search data:
LITHS: nannolith-radiate, circular, cylindrical, CA: closed, CROSS-POLARS: T-prominent,
Lith size: 4->8µm; Segments: 16->24;
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): at top of BC21 zone (100% up, 116.2Ma, in Aptian stage). Data source: Bown et al. 1998 - zonal marker
First occurrence (base): at base of BC19 zone (0% up, 125.7Ma, in Aptian stage). Data source: Bown et al. 1998 - zonal marker

Plot of occurrence data:

References:

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

Jakubowski, M. (1986). New calcareous nannofossil taxa from the Lower Cretaceous of the North Sea. INA Newsletter. 8: 38-42. gs V O

Varol, O. (1992b). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs


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Farhania varolii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-9-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10447 Go to Archive.is to create a permanent copy of this page - citation notes



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