Nannotax3 - ntax_mesozoic

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: 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

Rank: Genus

Type species: Pseudoconus enigma Bown and Cooper, 1989.

Farinacci & Howe catalog pages: Pseudoconus *

Distinguishing features: Solid, truncated-cone-shaped nannolith with rectangular cross-section constructed from minute, roughly equidimensional crystallites. Possibly a holococcolith.

Search data:

Tags	LITHS: holococcolith, quadrate,
Metrics	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): in lower part of Callovian Stage (20% up, 165.6Ma, in Callovian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Bajocian Stage (82% up, 168.6Ma, in Bajocian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Rarer genera

References:

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

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

Pseudoconus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-1-2021

Taxon Search:

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Short stable page link: http://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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