Nannotax3 - ntax_mesozoic - Farhania

Farhania


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Farhania
Sister taxa: Eprolithus, Radiolithus, Farhania, Lithastrinus, Uniplanarius, Quadrum, Micula, Palaeomicula

Distinguishing features:
Parent taxon (Polycyclolithaceae): Nannoliths composed of two superposed wall cycles and a central-area which may be closed, open and vacant, or spanned by a diaphragm-like structure. Elements have tangential c-axis orientation.
This taxon: Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.


Daughter taxa (time control age-window is: 0-800Ma)
Farhania varolii
Eprolithid with narrow wall (formed from 16-24 small, brick-like elements) surrounding a wide central area spanned by an amedian diaphragm.
Farhania sp.
Specimens not identified to species level

Taxonomy:

Citation: Farhania Varol, 1992
Rank: Genus
Type species: Eprolithus varolii Jakubowski, 1986

Farinacci & Howe catalog pages: Farhania *

Distinguishing features:
Parent taxon (Polycyclolithaceae): Nannoliths composed of two superposed wall cycles and a central-area which may be closed, open and vacant, or spanned by a diaphragm-like structure. Elements have tangential c-axis orientation.
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:
TagsLITHS: nannolith-radiate, circular, cylindrical, CA: closed, CROSS-POLARS: T-prominent,
MetricsLith size: 4->8┬Ám;
Data source notes: size range of included species
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in upper part of Aptian Stage (75% up, 116.3Ma, in Aptian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Aptian Stage (4% up, 125.8Ma, in Aptian stage). Data source: Total of range of species in this database

Plot of occurrence data:

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

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


nannotaxlogo400px

Farhania compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-5-2022

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10445 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics