Nannotax3 - ntax_mesozoic - Hayesites sp.

Hayesites sp.


Classification: ntax_mesozoic -> Nannoliths inc sedis -> Nannoliths inc sed - radiate multielement -> Hayesites -> Hayesites sp.
Sister taxa: H. albiensis, H. irregularis, H. sp.

Distinguishing features:
Parent taxon (Hayesites): Stellate nannoliths with 6-11 imbricate rays. Small subsidiary cycles and spines may be present.
This taxon: Specimens not identified to species level


Taxonomy:

Citation: Hayesites sp.
Rank: generic level id

Farinacci & Howe catalog pages:

Distinguishing features:
Parent taxon (Hayesites): Stellate nannoliths with 6-11 imbricate rays. Small subsidiary cycles and spines may be present.
This taxon: Specimens not identified to species level


Morphology:

We are using this category for images of specimens which can be identified to generic level but have not been definitively assigned to a single species.

Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
:
Lith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs O


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Hayesites sp. compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 30-11-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10498 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (1)

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Roque Aguado (Linares, Spain)

Hi all!

I think the image named "CovingtonWise_pl14-6.jpg", now included in Hayesites sp. looks more as one of the detached calices of Retecapsa angustiforata. It has a larger size and slender arms than H. irregularis and H. albiensis. Also, this image shows eight arms, as the detached calices of R. angustiforata (known as R. radiata by some authors).

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Jeremy Young (Tonbridge, UK)

agreed. Strangely in the original paper they have both its specimen and "Rucinolithus? radiatus" specimens from the same sample on the same plate and the only obvious difference is that the "Hayesites sp." specimen is more heavily calcified/overgrown. Anyway I will move the image.

as ever thank you for the input - the more anomalies we remove the better.

Jeremy

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