Kilwalithus


Classification: Coccolithophores -> Coccolithales -> Coccolithaceae -> Kilwalithus
Sister taxa: Coccolithus, Bramletteius, Campylosphaera, Chiasmolithus, Coronocyclus, Cruciplacolithus, Ericsonia, Solidopons, Birkelundia, Clausicoccus, Craticullithus, Hughesius, Kilwalithus,

Daughter taxa: (blue => in age window 0-800Ma)
Very small, elliptical placolith coccoliths with central-areas spanned by a perforate net. The distal shield is bicyclic and the rim structure appears to be coccolithacean.

Taxonomy:

Citation: Kilwalithus Bown, 2010
Rank: Genus
Type species: Kilwalithus cribrum Bown, 2005

Distinguishing features: Placolith coccoliths, typically small (c. 3 microns), with central-area spanned by a finely perforate net. The distal shield is typically bicyclic and the rim structure appears to be coccolithacean.

Farinacci & Howe catalog pages: Kilwalithus *

Search data:
TagsLITHS: placolith, elliptical, narrowly-elliptical, oblong, CA: grill, vacant,
CSPH: ellipsoidal-----, spherical, equant, elongated, CFC, CFC+process, polymorphic, DETAILS: ca_disjunct,
MetricsLith size: 2->4µm;
Sources:
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 Lutetian Stage (74% up, 42.9Ma, in Lutetian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Thanetian Stage (62% up, 57.2Ma, in Thanetian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R. (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research. 31(1): 11-38. gs :: view :: open


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Kilwalithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-8-2020

Taxon Search:
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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=782 Go to Archive.is to create a permanent copy of this page - citation notes



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