flat (coccolithaceae HOLs)


Classification: ntax_cenozoic -> Holococcoliths -> tubeless -> flat (coccolithaceae HOLs)
Sister taxa: Sphaerocalyptra, Anthosphaera, fried egg monomorphic, flat dimorphic, flat (coccolithaceae HOLs), flat trapezoidal, tubeless-minute

Daughter taxa (time control age-window is: 0-800Ma)
Calcidiscus leptoporus subsp. leptoporus HOL
Disk with double layer of crystallites in hexagonal meshwork array
Coccolithus pelagicus subsp. braarudii HOL
Disk with single layer of crystallites arranged in radial strings
Coccolithus pelagicus subsp. pelagicus HOL
Disk with single layer of crystallites in irregular rhombohedral array

Taxonomy:

Citation: flat (coccolithaceae HOLs) Young et al., 2003
Rank: species group

Distinguishing features: Liths are planar disks, variable ultrastructure. Cocospheres monomorphic. The species were formerly in Crystallolithus

Farinacci & Howe catalog pages:

Search data:
TagsLITHS:
MetricsLith size: 1.6->3µm;
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 Gelasian Stage (0% up, 2.6Ma, in Gelasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gs V O


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flat (coccolithaceae HOLs) compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=579 Go to Archive.is to create a permanent copy of this page - citation notes



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