Holodiscolithus agniniae


Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Holodiscolithus -> Holodiscolithus agniniae
Sister taxa: H. agniniae, H. catellus, H. geisenii, H. lippertii, H. liui, H. macroporus, H. minolettii, H. serus, H. solidus, H. whitesideae, H. sp.

Taxonomy:

Citation: Holodiscolithus agniniae Bown & Newsam 2017
Rank: Species

Distinguishing features: Flat, elliptical, formed from six crystallographic blocks divided by near-radial sutures.

Farinacci & Howe catalog pages: H. agniniae *


Morphology: Flat, elliptical holococcolith formed from six crystallographic blocks divided by near-radial sutures.
Differentiation: Similar to Cretaceous coccoliths of the genus Calculites, but this species is distinguished by being flat and having six similarly-sized crystallographic blocks. [Bown & Newsam 2017]

Size: Holotype L = 4.9μm (Paratype L = 4.8μm).

Search data:
TagsLITHS: holococcolith, elliptical, CA: closed, CROSS-POLARS: R-prominent,
MetricsLith size: 4->7µm;
Data source notes: lith size from OD & extended slightly
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP14b subzone (46.29-47.84Ma, top in Lutetian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: Bown & Newsam 2017

Plot of occurrence data:

References:

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O

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Holodiscolithus agniniae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-2-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=716 Go to Archive.is to create a permanent copy of this page - citation notes
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