Nannotax3 - ntax_cenozoic

Nannotax3 - ntax_cenozoic - Jakubowskia Nannotax3 - ntax_cenozoic - Jakubowskia

Jakubowskia

Classification: ntax_cenozoic -> Mesozoic Survivors -> Chiastozygaceae -> Jakubowskia
Sister taxa: Jakubowskia, Neocrepidolithus, Staurolithites, Zeugrhabdotus

Daughter taxa (time control age-window is: 0-800Ma)
				Jakubowskia leoniae Elliptical murolith with narrow rim and wide vacant central area.
				Jakubowskia sp. Specimens which cannot be assigned to any established species

Taxonomy:

Citation: Jakubowskia Varol, 1989

Rank: Genus

Type species: Jakubowskia leoniae Varol, 1989

Distinguishing features:
Parent taxon (Chiastozygaceae): Loxolith coccoliths with variably-developed proximal/inner-cycles and a central-area spanned by axial, non-axial or diagonal crossbars or a single transverse bar. LM image includes both unicyclic and bicyclic types. Outer rim clockwise-imbricate.
This taxon: Elliptical murolith with narrow rim and wide vacant central area.

Farinacci & Howe catalog pages: Jakubowskia *

Search data:

LITHS: murolith, elliptical, CA: vacant, CROSS-POLARS: R-prominent,

Lith size: 6->13µm;

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 Ypresian Stage (67% up, 50.5Ma, in Ypresian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Selandian Stage (4% up, 61.5Ma, 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: Chiastozygaceae

References:

Varol, O. (1989). Eocene calcareous nannofossils from Sile (northwest Turkey). Revista Española de Micropaleontología. 21: 273-320. gs V O

Jakubowskia compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-3-2023

Taxon Search:

Advanced Search

AphiaID: not found
Short stables page link: https://mikrotax.org/Nannotax3/index.php?id=773 Go to Archive.is to create a permanent copy of this page - citation notes

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