Octopodorhabdus decussatus


Classification: ntax_mesozoic -> Podorhabdales -> Axopodorhabdaceae -> Octopodorhabdus -> Octopodorhabdus decussatus
Sister taxa: O. decussatus, O. praevisus, O. sp.

Distinguishing features: Podorhabdids with central area spanned by eight bars that delineate eight large perforations that run either side of the longitudinal axis.


Taxonomy:

Citation: Octopodorhabdus decussatus (Manivit, 1959) Rood et al., 1971
Rank: Species
Basionym: Discolithus decussatus Manivit, 1959
Taxonomic discussion: Holotype is a sketch from the lower Eocene that looks little like this Jurassic podorhabdid, but the name has been adopted presumably on the assumption the specimen might be reworked.

Farinacci & Howe catalog pages: D. decussatus *

Distinguishing features: Podorhabdids with central area spanned by eight bars that delineate eight large perforations that run either side of the longitudinal axis.

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, grill, pores, process, CROSS-POLARS: rim-bicyclic, V-prominent,
MetricsLith size: 5->8µm;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NJ14 zone (160.84-163.64Ma, top in Oxfordian stage). Data source: Bown & Cooper 1998
First occurrence (base): within NJ11 zone (166.40-168.67Ma, base in Bajocian stage). Data source: Bown & Cooper 1998

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

Grün, W. & Zweili, F. (1980). Das kalkige Nannoplankton der Dogger-Malm-Grenze im Berner Jura bei Liesberg (Schweiz). Jahrbuch der Geologischen Bundesanstalt. 123: 231-341. gs V O

Manivit, H. (1959). Contribution a l'étude des coccolithes del'Eocene. Publications du Service de la Carte Géologique de l'Algérie (Nouvelle Série) Bulletin. 25: 333-382. gs

Medd, A. W. (1979). The Upper Jurassic coccoliths from the Haddenham and Gamlingay boreholes (Cambridgeshire, England). Eclogae Geologicae Helvetiae. 72: 19-109. gs V O

Rood, A. P., Hay, W. W. & Barnard, T. (1971). Electron Microscope Studies of Oxford Clay Coccoliths. Eclogae Geologicae Helvetiae. 64: 245-272. gs V O

Rood, A. P., Hay, W. W. & Barnard, T. (1973). Electron microscope studies of Lower and Middle Jurassic coccoliths. Eclogae Geologicae Helvetiae. 66: 365-382. gs V O


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Octopodorhabdus decussatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10816 Go to Archive.is to create a permanent copy of this page - citation notes



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