Faviconus


Classification: Mesozoic -> Braarudosphaerales -> Nannoconaceae -> Faviconus
Sister taxa: Faviconus, Nannoconus,

Distinguishing features: Long, narrow columnar nannoliths formed from stacks of calcite laths around a narrow axial canal. May occur as linked groups of multiple columns.


Daughter taxa: (blue => in age window 0-300Ma)
Tall, narrow columnar nannoliths formed from stacks of calcite laths around a narrow axial canal. May occur as linked groups of multiple columns.
Specimens not identified to species level

Taxonomy:

Citation: Faviconus Bralower in Bralower et al., 1989
Rank: Genus
Type species: Faviconus multicolumnatus Bralower in Bralower et al., 1989.

Farinacci & Howe catalog pages: Faviconus *

Distinguishing features: Long, narrow columnar nannoliths formed from stacks of calcite laths around a narrow axial canal. May occur as linked groups of multiple columns.


Morphology remarks: Similar to nannoconids but the constituent stacked cycles do not appear to spiral.

See also: Pseudoconus enigma ;

Geological Range:
Last occurrence (top): within Berriasian Stage (139.39-145.01Ma, top in Berriasian stage). Data source: Total of range of species in this database
First occurrence (base): within Oxfordian Stage (157.25-163.47Ma, base in Oxfordian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P.R. & Cooper, M.K.E., (1998). Jurassic. In: Bown, P.R. (Editor), Calcareous nannofossil biostratigraphy. British Micropalaeontological Society Publication Series. Chapman & Hall, pp. 34-85.

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.


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Faviconus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-11-2018

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10448Go to Archive.is to create a permanent copy of this page - citation notes



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