Nannotax3 - ntax_mesozoic - Eprolithus octopetalus Nannotax3 - ntax_mesozoic - Eprolithus octopetalus

Eprolithus octopetalus


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Eprolithus -> Eprolithus octopetalus
Sister taxa: E. rarus, E. moratus, E. octopetalus, E. floralis, E. apertior, E. antiquus, E. sp.

Distinguishing features:
Parent taxon (Eprolithus): Moderately tall, circular to stellate, multiradiate nannoliths with 5-9 petaloid wall-cycle elements surrounding a wide central area spanned by a median diaphragm. Typically H-shaped in side view.
This taxon: Eprolithus with eight wall-elements.


Taxonomy:

Citation: Eprolithus octopetalus Varol, 1992
taxonomic rank: Species
Synonyms:

Farinacci & Howe catalog pages: E. octopetalus * , L. octuplus * , D. noelae *

Distinguishing features:
Parent taxon (Eprolithus): Moderately tall, circular to stellate, multiradiate nannoliths with 5-9 petaloid wall-cycle elements surrounding a wide central area spanned by a median diaphragm. Typically H-shaped in side view.
This taxon: Eprolithus with eight wall-elements.

Most likely ancestor: Eprolithus floralis - at confidence level 3 (out of 5). Data source: Varol 1992.
Likely descendants: Eprolithus moratus; plot with descendants

Search data:
LITHS: nannolith-radiate, star-shaped, cylindrical, CA: closed, CROSS-POLARS: T-prominent,
Lith size: 3->9µm; Segments: 8->8;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in mid part of UC8b subzone (50% up, 90.2Ma, in Turonian stage). Data source: Burnett 1998, fig. 6.3
First occurrence (base): in upper part of UC5c subzone (80% up, 93.9Ma, in Cenomanian stage). Data source: Burnett 1998, fig.6.3

Plot of occurrence data:

References:

Bralower, T. J. & Bergen, J. A. (1998). Cenomanian-Santonian calcareous nannofossil biostratigraphy of a transect of cores drilled across the Western Interior Seaway. In, Dean, W. E. & Arthur, M. A. (eds) Stratigraphy and paleoenvironments of the Cretaceous Western Interior Seaway. SEPM Concepts in Sedimentology and Paleontology . -. gs

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. gs O

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O

Corbett, M. J. & Watkins, D. K. (2014b). Transitional forms in the Eprolithus-Lithastrinus lineage: a taxonomic revision of Turonian through Santonian species. Micropaleontology. 60(2): 175-193. gs

Hardas, P. & Mutterlose, J. (2006). Calcareous nannofossil biostratigraphy of the Cenomanian/Turonian boundary interval of ODP Leg 207 at the Demerara Rise. Revue de Micropaléontologie. 49(3): 165-179. gs

Kanungo, S., Bown, P. R. & Gale, A. S. (2020). Cretaceous (Albian-Turonian) calcareous nannofossil biostratigraphy of the onshore Cauvery Basin, southeastern India. Cretaceous Research. 118 [2021]: 1-22. gs

Linnert, C., Mutterlose, J. & Erbacher, J. (2010). Calcareous nannofossils of the Cenomanian/Turonian boundary interval from the Boreal Realm (Wunstorf, northwest Germany). Marine Micropaleontology. 74: 38-58. gs

Püttmann, T. & Mutterlose, J. (2019). Calcareous nannofossils from a Late Cretaceous nearshore setting. Journal of Nannoplankton Research. S4: 81-88. gs

Robaszynski, F. et al. (1993). Le Cénomanien de la région de Kalaat Senan (Tunisie centrale): Litho-biostratigraphie et interprétation séquentielle. Revue de Paléobiologie. 12(2): 351-505. gs

Salomon, R. (1999). The Calcite Palace. Website - https://ina.tmsoc.org/galleries/CalcitePalace/index.htm. -. gs

Varol, O. (1992). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs


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Eprolithus octopetalus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-6-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10436 Go to Archive.is to create a permanent copy of this page - citation notes
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