C. pelagicus group


Classification: Coccolithophores -> Coccolithales -> Coccolithaceae -> Coccolithus -> C. pelagicus group
Sister taxa: C. pelagicus group, C. formosus group, C. biparteoperculatus group, C. gigas group, C. sp.,

Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa
Simlar to C. pelagicus but more strongly birefringent and with raised collar on distal surface.

Elliptical placolith coccolith with central area open or spanned by a disjunct bar on the proximal surface.

Like C. pelagicus but very large (>14 µm).

Coccoliths very large, 14-20µm, usually 15-17µm, no bar in central area.

Medium to large elliptical Coccolithus with wide (> width of the shields) vacant central area.

Medium to large broadly elliptical to subcircular Coccolithus with a broad, open, central-area; tube structure simplified.

Delicate cross in central area

Taxonomy:

Citation: Coccolithus pelagicus group
Rank: species group

Distinguishing features: Elliptical to sub-circular with central opening-sometimes with bar or delicate cross

Farinacci & Howe catalog pages:

Search data:
TagsLITHS: placolith, elliptical, RIM: inner-tube-broad, psh-bicyclic,
CSPH: spherical, monomorphic, V-UNITS: distal shield, px-tube, R-UNITS: c-str, ds-tube, prox shield, DETAILS: rim-bicyclic, isogyres oblique,
MetricsLith size: 4->20µm;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:


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C. pelagicus group compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2019

Taxon Search:
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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=170 Go to Archive.is to create a permanent copy of this page - citation notes



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