Solid, truncated-cone-shaped nannolith with rectangular cross-section constructed from minute, roughly equidimensional crystallites. Possibly a holococcolith.
Specimens not identified to species level
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:
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 |
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:
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 OReferences:
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Pseudoconus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-1-2025
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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