Distinguishing features: Ellpitical, rim 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 with two cycles of relatively large perforations (20-30 in total). | |||
![]() | ![]() | Ethmorhabdus with prominent axial cross bars as well as net. | ||
![]() | ![]() | ![]() | Ethmorhabdus with finely perforate net. | |
![]() | Ethmorhabdus with finely perforate net. | |||
Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Ethmorhabdus *
Distinguishing features: Ellpitical, rim narrow rim; central area wide, spanned by multiperforate net, with or without axial cross and spine.
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. (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Éditions du Centre National de la Recherche Scientifique, Paris. -. gsReferences:
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Ethmorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-12-2019
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 |