Distinguishing features: Elliptical, narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.
Daughter taxa (time control age-window is: 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:
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, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Metrics | Lith size: 4->12µm; Data source notes: size range of included species |
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:
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. Essai de classification des coccolithes fossiles. Éditions du Centre National de la Recherche Scientifique, Paris. 1-209. gsReferences:
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Ethmorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-4-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10439 Go to Archive.is to create a permanent copy of this page - citation notes |