Clathrolithus


Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Clathrolithus
Sister taxa: Clathrolithus, Corannulus, Daktylethra, Holodiscolithus, Lanternithus, Multipartis, Octolithus, Orthozygus, Quadrilateris, Semihololithus, Varolia, Youngilithus, Zygrhablithus, Unidentified fossil holococcoliths

Daughter taxa (time control age-window is: 0-800Ma)
Clathrolithus arenarius
Large non-birefringent elliptical holococcolith comprising a perforate framework with a large central pore and 9-13 marginal pores.
Clathrolithus ellipticus
Large, solid, elliptical and ‘C’-shaped holococcoliths that have honeycomb-like ridges on one surface.
Clathrolithus joidesa
C-shaped nannoliths only observed in side view. Similar in appearance to Clathrolithus ellipticus but lacking clear ridges and pores.
Clathrolithus minutus
Like Clathrolithus ellipticus but with a greater number of smaller pores/perforations (~<0.5 µm).
Clathrolithus sp.
Specimens which cannot be assigned to any established species

Taxonomy:

Citation: Clathrolithus Deflandre in Deflandre & Fert, 1954
Rank: Genus
Type species: Clathrolithus ellipticus Deflandre in Deflandre & Fert, 1954
Synonyms: Peritrachelina Deflandre 1952 (type species P. ornata was synonimised with the type species of Clathrolithus - C. ellipticus by Bown 2005)
Taxonomic discussion: Peritrachelina appears to be a senior synonym of Clathrolithus, so the taxonomy probably should be revised [JRY Aug 2014].

Distinguishing features: Unusual holococcoliths with non-coccolith morphology typically comprising an elliptical, concavo-convex, domed, perforate framework.

Farinacci & Howe catalog pages: Clathrolithus * , Peritrachelina *


Morphology: Low birefringence in XPL.

Search data:
TagsLITHS: holococcolith, asymmetric, elliptical, CROSS-POLARS: 1ou, V-prominent,
MetricsLith size: 7->9µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in upper part of Rupelian Stage (74% up, 29.6Ma, in Rupelian stage). Data source: Total of range of species in this database
First occurrence (base): near top of Selandian Stage (87% up, 59.5Ma, in Selandian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

Deflandre, G. (1952). Classe des Coccolithophoridés. (Coccolithophoridae. Lohmann, 1902). In, Grassé, P. P. (ed.) Traité de Zoologie. Masson, Paris 439-470. gs


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Clathrolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=298 Go to Archive.is to create a permanent copy of this page - citation notes



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