Nannotax3 - ntax_mesozoic - Carinolithus poulnabronei

Carinolithus poulnabronei


Classification: ntax_mesozoic -> Podorhabdales -> Calyculaceae -> Carinolithus -> Carinolithus poulnabronei
Sister taxa: C. magharensis, C. superbus, C. poulnabronei, C. sp.

Distinguishing features:
Parent taxon (Carinolithus): Trumpet-shaped coccoliths with small, disc-like proximal shield and high, flaring distal shield.
This taxon: Species of Carinolithus with a broad, flaring, tube.


Taxonomy:

Citation: Carinolithus poulnabronei Mattioli 1996
Rank: Species

Farinacci & Howe catalog pages: C. poulnabronei *

Distinguishing features:
Parent taxon (Carinolithus): Trumpet-shaped coccoliths with small, disc-like proximal shield and high, flaring distal shield.
This taxon: Species of Carinolithus with a broad, flaring, tube.


Morphology:


Size:
proximal shield, 3-4 µm; distal shield, 6-7 µm; rim height, 7-10 µm (Mattioli 1996)


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations
Considered by Mattioli (1996) to be an evolutionary intermediate between Calyculus and other Carinolithus species - the tube is elevated as in Carinolithus but is still open, as in Calyculus

Search data:
LITHS: placolith, circular, rod-shaped, cylindrical, hollow, CA: vacant, closed, CROSS-POLARS: rim-unicyclic, V-prominent,
Lith size: 7->10µm;
Data source notes: original description
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Aalenian Stage (170.30-174.15Ma, top in Aalenian stage). Data source: original description
First occurrence (base): within Toarcian Stage (174.15-182.70Ma, base in Toarcian stage). Data source: original description

Plot of occurrence data:

References:

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

Crux, J. A. (1987a). Concerning dimorphism in Early Jurassic coccoliths and the origin of the genus Discorhabdus Noël 1965. Abhandlungen der Geologischen Bundesanstalt. 39: 51-55. gs V O

Mattioli, E. (1996). New calcareous nannofossil species from the Early Jurassic of Tethys. Rivista Italiana di Paleontologia e Stratigrafia. 102(3): 397-412. gs V O

Menini, A., Mattioli, E., Spangenberg, J. E., Pittet, B. & Suan, G. (2018). New calcareous nannofossil and carbon isotope data for the Pliensbachian/Toarcian boundary (Early Jurassic) in the western Tethys and their paleoenvironmental implications. Newsletters on Stratigraphy. -. gs

Visentin, S., Faucher, G. & Erba, E. Mattioli, E. (2021b). Taxonomic revision of the genus Carinolithus (Early - Middle Jurassic) based on morphometric analyses and diagenesis observations: Implications for biostratigraphy and evolutionary trends. Marine Micropaleontology. 162: 1-11. gs


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Carinolithus poulnabronei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-12-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10198 Go to Archive.is to create a permanent copy of this page - citation notes



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