Nannotax3 - ntax_main - Hexapodorhabdus Nannotax3 - ntax_main - Hexapodorhabdus

Hexapodorhabdus


Classification: ntax_main -> Mesozoic nannofossils -> Podorhabdales -> Axopodorhabdaceae -> Hexapodorhabdus
Sister taxa: Podorhabdus, Hemipodorhabdus, Axopodorhabdus, Tetrapodorhabdus, Hexapodorhabdus, Octocyclus, Octopodorhabdus ⟩⟨ Dodekapodorhabdus, Perissocyclus, Teichorhabdus ⟩⟨ Cribrosphaerella, Ethmorhabdus, Nephrolithus, Psyktosphaera ⟩⟨ Cribrocorona

Daughter taxa (time control age-window is: 0-800Ma)
Hexapodorhabdus cuvillieri
Podorhabdids with central area spanned by six broad bars that delineate six large perforations, including one at each end of the central area. Central hollow spine.
Hexapodorhabdus sp.
Specimens not identified to species level

Taxonomy:

Citation: Hexapodorhabdus Noël, 1965
Taxonomic rank: genus
Type species: Hexapodorhabdus cuvillieri Noël, 1965

Distinguishing features:
Parent taxon (Axopodorhabdaceae): Regular placoliths; central-area, with cross-bars or perforated plate; often with tall, hollow spines.
Distal shield elements non-imbricate V-units; proximal shield and inner cycle formed from R-units. Rim often appears beaded in LM

This taxon: Elliptical; central area spanned by six broad bars delineating six large perforations, including one at each end of the central area. Central hollow spine.

Farinacci & Howe catalog pages: Hexapodorhabdus *

Search data:
LITHS: placolith, elliptical, CA: ca_disjunct, grill, pores, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 5->10µm;
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 NJ16a subzone (100% up, 149.1Ma, in Tithonian 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. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 34-85. gs O

Noël, D. (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Essai de classification des coccolithes fossiles. Éditions du Centre National de la Recherche Scientifique, Paris. 1-209. gs


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Hexapodorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-6-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10530 Go to Archive.is to create a permanent copy of this page - citation notes



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