Nannotax3 - ntax_mesozoic - Ethmorhabdus crucifer Nannotax3 - ntax_mesozoic - Ethmorhabdus crucifer

Ethmorhabdus crucifer


Classification: ntax_mesozoic -> Podorhabdales -> Axopodorhabdaceae -> Ethmorhabdus -> Ethmorhabdus crucifer
Sister taxa: E. anglicus, E. crucifer, E. gallicus, E. hauterivianus, E. sp.

Distinguishing features:
Parent taxon (Ethmorhabdus): Elliptical, narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.
This taxon: Medium (5-8 µm) Ethmorhabdus, with prominent axial cross bars as well as net.


Taxonomy:

Citation: Ethmorhabdus crucifer Noël, 1973
Taxonomic rank: species

Farinacci & Howe catalog pages: E. crucifer *

Distinguishing features:
Parent taxon (Ethmorhabdus): Elliptical, narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.
This taxon: Medium (5-8 µm) Ethmorhabdus, with prominent axial cross bars as well as net.

Search data:
LITHS: placolith, elliptical, CA: closed, cross-axial, grill, plate, process, ca_disjunct, CROSS-POLARS: R-prominent, V-prominent, rim-bicyclic,
Lith size: 5->8µm;
Data source notes: illustrated specimens (large error margin)
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Early Toarcian Substage (177.50-184.20Ma, top in Toarcian stage). Data source: Bown & Cooper 1998
First occurrence (base): within Early Toarcian Substage (177.50-184.20Ma, base in Toarcian 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 O

Goy, G., Noël, D. & Busson, G. (1979). Les conditions de sédimentation des schistes-carton (Toarcien inf.) du bassin de Paris déduites de l'étude des nannofossiles calcaires et des diagraphies. Document des Laboratoires de Géologie de la Faculté des Sciences de Lyon. 75: 33-57. gs 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

Noël, D. (1973). Nannofossiles calcaires de sédiments jurassiques finement laminés. Bulletin du Muséum National d'Histoire Naturelle, Paris. 75 [1972]: 95-156. gs


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Ethmorhabdus crucifer compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-2-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10441 Go to Archive.is to create a permanent copy of this page - citation notes
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Comments (2)

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Dear Jeremy,

The original description of this species is in Noël, 1972 (Nannofossiles calcaires de sédiments jurassiques finement laminés. Bull. Mus. Nat. Hist. Natur.,

3e sér., n° 75, pp. 95-156)

Citation would be: Ethmorhabdus crucifer Noël, 1972

Kind regards,

Mica

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Thanks Mica and I have corrected that now. Strictly though the correct publication date is 1973, even though the cover date on the article is 1972.

Jeremy