Nannotax3 - ntax_mesozoic - Pseudoconus Nannotax3 - ntax_mesozoic - Pseudoconus

Pseudoconus


Classification: ntax_mesozoic -> Holococcoliths -> Rarer genera -> Pseudoconus
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata ⟩⟨ Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths

Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Solid, truncated-cone-shaped nannolith with rectangular cross-section constructed from minute, roughly equidimensional crystallites. Possibly a holococcolith.


Daughter taxa (time control age-window is: 0-800Ma)
Pseudoconus enigma
Solid, truncated-cone-shaped nannolith with rectangular cross-section constructed from minute, roughly equidimensional crystallites. Possibly a holococcolith.
Pseudoconus sp.
Specimens not identified to species level

Taxonomy:

Citation: Pseudoconus Bown & Cooper, 1989
taxonomic rank: Genus
Type species: Pseudoconus enigma Bown and Cooper, 1989.

Farinacci & Howe catalog pages: Pseudoconus *

Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Solid, truncated-cone-shaped nannolith with rectangular cross-section constructed from minute, roughly equidimensional crystallites. Possibly a holococcolith.

Search data:
LITHS: holococcolith, quadrate,
Lith size: 4->7µm;
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): at top of NJ12a subzone (100% up, 164.6Ma, in Callovian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NJ11 zone (165.71-168.69Ma, base in Bajocian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Bown, P. R. & Cooper, M. K. E. (1989b). New calcareous nannofssils from the Jurassic. Journal of Micropalaeontology. 8: 91-96. gs

Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 34-85. gs O


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Pseudoconus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-7-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10957 Go to Archive.is to create a permanent copy of this page - citation notes
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