Nannotax3 - ntax_mesozoic - Eprolithus rarus

Eprolithus rarus


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Eprolithus -> Eprolithus rarus
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 six wall-elements.


Taxonomy:

Citation: Eprolithus rarus Varol, 1992
Rank: Species

Farinacci & Howe catalog pages: E. rarus *

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 six wall-elements.


Morphology:


Size:

Most likely ancestor: Eprolithus moratus - at confidence level 0 (out of 5). Data source: Varol 1992.

Search data:
LITHS: nannolith-radiate, star-shaped, cylindrical, CA: closed, CROSS-POLARS: T-prominent,
Lith size: 5->8µm; Segments: 6->6;
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 Campanian Stage (72.05-83.64Ma, top in Campanian stage). Data source: Burnett 1998
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Burnett 1998

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

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

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 V O

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


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Eprolithus rarus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-10-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10437 Go to Archive.is to create a permanent copy of this page - citation notes



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