Nannotax3 - ntax_cenozoic - Neococcolithes

Nannotax3 - ntax_cenozoic - Neococcolithes <title>Nannotax3 - ntax_cenozoic - Neococcolithes

Neococcolithes

Classification: ntax_cenozoic -> Zygodiscales -> Zygodiscaceae -> Neococcolithes
Sister taxa: Lophodolithus, Neochiastozygus, Zygodiscus ⟩⟨ Chiphragmalithus, Isthmolithus, Neococcolithes, Nannotetrina

Daughter taxa (time control age-window is: 0-800Ma)
				Neococcolithes dubius Moderate to large with H-shaped cross bars.
				Neococcolithes lososnensis Neococcolithes species with long central bar
				Neococcolithes minutus Narrowly elliptical (with pointed ends), with cross bars forming an H-shape.
				Neococcolithes nudus Narrowly elliptical with cross bars in narrow X-shape
				Neococcolithes protenus Small to moderate with straight, diagonal, cross bars.
				Neococcolithes purus Narrowly-elliptical with vacant central area
				Neococcolithes radiatus Narrowly-elliptical, central area with numerous (18–22) radiating bars
				Neococcolithes sp. Specimens which cannot be assigned to any established species

Taxonomy:

Citation: Neococcolithes Sujkowski, 1931

Rank: Genus

Type species: Neococcolithes lososnensis Sujkowski, 1931

Synonyms:

Heliorthus Brönniman & Stradner 1960 (according to Perch-Nielsen 1985)
Indumentalithus Vekshina1959 (according to Perch-Nielsen 1985)
Zygolithus Kamptner 1949 (according to Perch-Nielsen 1985)

Distinguishing features:
Parent taxon (Zygodiscaceae): Muroliths with rim formed from well-developed V- and variably developed R-units, with opposite imbrication directions, and central area structures that include disjunct transverse bars and diagonal crosses. R-units vestigial or not observed in several genera (Chiphragmalithus, Isthmolithus, Neococcolithes).
This taxon: Muroliths with diagonal to H-shaped cross bars. R-unit relict or absent and so LM image is unicyclic.

Farinacci & Howe catalog pages: Neococcolithes * , Heliorthus * , Zygolithus + + + * , Indumentalithus *

Morphology:

Size:

Predominantly medium-sized (5-8 µm).

Ecology & Biogeography

Biology & life-cycles

Phylogenetic relations

See also: Nannotetrina - nannolith possibly formed by reduction of wall in Neococcolithes;

Search data:

LITHS: murolith, elliptical, CA: ca_disjunct, diagonal cross, CROSS-POLARS: rim-unicyclic, V-prominent,

Lith size: 5->10µm;

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): near top of Priabonian Stage (86% up, 34.4Ma, in Priabonian stage). 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:

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: Zygodiscaceae

References:

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Sujkowski, Z. (1931). Étude pétrographique de Crétacé de Pologne. Sprawozdania Polskiego instytutu geologicznego. 6: 485-628. gs

Neococcolithes compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 30-1-2023

Taxon Search:

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AphiaID: not found
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=921 Go to Archive.is to create a permanent copy of this page - citation notes

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