Nannotax3 - ntax_main - Dodekapodorhabdus Nannotax3 - ntax_main - Dodekapodorhabdus

Dodekapodorhabdus


Classification: ntax_main -> Mesozoic nannofossils -> Podorhabdales -> Axopodorhabdaceae -> Dodekapodorhabdus
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)
Dodekapodorhabdus noeliae
Large species; central area with large spine base surrounded by ring of small pores
Dodekapodorhabdus sp.
Specimens not identified to species level

Taxonomy:

Citation: Dodekapodorhabdus Perch-Nielsen, 1968
Taxonomic rank: genus
Type species: Dodekapodorhabdus noelii Perch-Nielsen, 1968
Taxonomic discussion: Varol & Girgis (1994) emended the diagnosis of the genus to include forms with ten pores and recombined several species into it, most of them are now placed in Perissocyclus.

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 with one cycle of about 12 perforations and central hollow spine

Farinacci & Howe catalog pages: Dodekapodorhabdus + *

Search data:
LITHS: placolith, elliptical, CA: ca_disjunct, plate, pores, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 9->12µm;
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 Cenomanian Stage (100% up, 93.9Ma, in Cenomanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Perch-Nielsen, K. (1968). Der Feinbau und die Klassifikation der Coccolithen aus dem Maastrichtien von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 16: 1-96. gs


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Dodekapodorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-6-2025

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10397 Go to Archive.is to create a permanent copy of this page - citation notes



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