Ethmorhabdus hauterivianus


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

Distinguishing features: Large (8-12 µm) Ethmorhabdus with finely perforate net, outline often irregular, spine absent


Taxonomy:

Citation: Ethmorhabdus hauterivianus (Black, 1971) Applegate et al. in Covington & Wise, 1987
Rank: Species
Basionym: Cribrosphaera hauteriviana Black, 1971
Synonyms: Cribrosphaerella hauteriviana
Taxonomic discussion: E. hauterivianus is similar to E. gallicus but Early Cretaceous rather than Late Jurassic in age - it also appers to be somewhat larger, to have a less regular shape and finer, less regular, pores.

Farinacci & Howe catalog pages: C. hauteriviana *

Distinguishing features: Large (8-12 µm) Ethmorhabdus with finely perforate net, outline often irregular, spine absent

Search data:
TagsLITHS: placolith, elliptical, CA: ca_disjunct, grill, plate, closed, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 8->12µm;
Data source notes: original description & 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 Barremian Stage (126.30-130.77Ma, top in Barremian stage). Data source: Bown et al. 1998
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Bown et al. 1998

Plot of occurrence data:

References:

Applegate, J. L. & Bergen, J. A. (1988). Cretaceous calcareous nannofossil biostratigraphy of sediments recovered from the Galicia Margin, ODP Leg 103. Proceedings of the Ocean Drilling Program, Scientific Results. 103: 293-348. gs V O

Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. 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

Covington, J. M. & Wise, S. W. (1987). Calcareous nannofossil biostratigraphy of a Lower Cretaceous deep-sea fan complex: Deep Sea Drilling Project Leg 93 Site 603, lower continental rise off Cape Hatteras. Initial Reports of the Deep Sea Drilling Project. 93: 617-660. gs V O

de Kaenel, E. & Bergen, J. A. (1996). Mesozoic calcareous nannofossil biostratigraphy from sites 897, 899, and 901, Iberia Abyssal Plain: New biostratigraphic evidence. Proceedings of the Ocean Drilling Program, Scientific Results. 149: 27-59. gs V O

Jeremiah, J. (2001). A Lower Cretaceous nannofossil zonation for the North Sea Basin. Journal of Micropalaeontology. 20(1): 45-80. gs V O

Wind, F. H. & Cepek, P. (1979). Lower Cretaceous calcareous nannoplankton from DSDP Hole 397A (northwest African Margin). Initial Reports of the Deep Sea Drilling Project. 47A: 221-235. gs V O


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Ethmorhabdus hauterivianus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-6-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10443 Go to Archive.is to create a permanent copy of this page - citation notes



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