Nannotax3 - Mesozoic - Ethmorhabdus

Ethmorhabdus

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

Distinguishing features: Elliptical, narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.

Daughter taxa: (blue => in age window 0-800Ma)
				Ethmorhabdus anglicus Small (4-6 µm) Ethmorhabdus with two cycles of relatively large perforations (20-30 in total).
				Ethmorhabdus crucifer Medium (5-8 µm) Ethmorhabdus, with prominent axial cross bars as well as net.
				Ethmorhabdus gallicus Medium (7-9 µm) Ethmorhabdus with finely perforate net.
				Ethmorhabdus hauterivianus Large (8-12 µm) Ethmorhabdus with finely perforate net, outline often irregular, spine absent
				Ethmorhabdus sp. Specimens not identified to species level

Taxonomy:

Citation: Ethmorhabdus Noël, 1965

Rank: Genus

Type species: Ethmorhabdus gallicus Noël, 1965

Farinacci & Howe catalog pages: Ethmorhabdus *

Distinguishing features: Elliptical, narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.

Search data:

Tags	LITHS: placolith, elliptical, CA: grill, plate, process, closed, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: rim-bicyclic,
Metrics	Lith size: 4->12µm; Sources: 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 Barremian Stage (100% up, 126.3Ma, in Barremian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Toarcian Stage (0% up, 182.7Ma, in Toarcian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Axopodorhabdaceae

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 :: ::

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs :: ::

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

Ethmorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 3-8-2020

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10439 Go to Archive.is to create a permanent copy of this page - citation notes

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