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.
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 |  |  |  | Clathrolithus ellipticus
Large, solid, elliptical and ‘C’-shaped holococcoliths that have honeycomb-like ridges on one surface.
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 |  |  |  | Clathrolithus joidesa
C-shaped nannoliths only observed in side view. Similar in appearance to Clathrolithus ellipticus but lacking clear ridges and pores.
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 |  |  | | Clathrolithus minutus
Like Clathrolithus ellipticus but with a greater number of smaller pores/perforations (~<0.5 µm).
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| | | | Clathrolithus sp.
Specimens which cannot be assigned to any established species
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Taxonomy:
Citation: Clathrolithus Deflandre in Deflandre & Fert, 1954Rank: GenusType species: Clathrolithus ellipticus Deflandre in Deflandre & Fert, 1954Synonyms: 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:
| Tags | LITHS: holococcolith, asymmetric, elliptical, CROSS-POLARS: 1ou, V-prominent, |
| Metrics | Lith 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:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: fossil holococcoliths
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
