Nannotax3 - ntax_mesozoic - Other nannoliths with tangential c-axes

Nannotax3 - ntax_mesozoic - Other nannoliths with tangential c-axes Nannotax3 - ntax_mesozoic - Other nannoliths with tangential c-axes

Other nannoliths with tangential c-axes

Classification: ntax_mesozoic -> Braarudosphaerales -> Other nannoliths with tangential c-axes
Sister taxa: Braarudosphaeraceae, Transitional genera, Nannoconaceae ⟩⟨ Polycyclolithaceae, Other nannoliths with tangential c-axes

Distinguishing features:
Parent taxon (Braarudosphaerales): Nannoliths formed of multiple layers of thin elements, arranged with rotational symmetry, and showing tangential c-axis orientations.
This taxon: Genera incertae sedis with radial structure and tangential c-axis orientation

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Kokia Stellate, multiradiate, rosette-shaped nannoliths constructed from >6 single crystal-unit radial rays that show grey to white birefringence under XPL.	Kokia borealis Kokia curvata Kokia kayae Kokia stellata Kokia sp.
	Tegulalithus Cylindrical nannoliths, typically with flanges at both ends and so cotton-reel-shaped in side view.	Tegulalithus septentrionalis Tegulalithus tessellatus Tegulalithus sp.

Taxonomy:

Citation: Other nannoliths with tangential c-axes

Rank: Family

Taxonomic discussion: This is an informal grouping. The tangetial c-axis orientation suggests these genera belong to one or other of the families included here in the Braarudosphaerales. Acadialithus, Rucinolithus and Hayesites are three oher gnera that are currently placed in the more geberal Nannoliths incertae sedis category that might belong here. [my interpretation - JRY 2019]

Farinacci & Howe catalog pages:

Search data:

Lith size: 0->0µm;

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

Geological Range:
Last occurrence (top): at top of Albian Stage (100% up, 100.5Ma, in Albian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Berriasian Stage (0% up, 145Ma, in Berriasian 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. For the customisable plot option go to a genus page Parent: Braarudosphaerales

References:

Other nannoliths with tangential c-axes compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-4-2023

Taxon Search:

Advanced Search

AphiaID: not found
Short stables page link: https://mikrotax.org/Nannotax3/index.php?id=11374 Go to Archive.is to create a permanent copy of this page - citation notes

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