Nannotax3 - ntax_mesozoic - Nannoliths inc sed

Nannotax3 - ntax_mesozoic - Nannoliths inc sed - other

Nannoliths inc sed - other

Classification: ntax_mesozoic -> Nannoliths inc sedis -> Nannoliths inc sed - other
Sister taxa: Goniolithaceae, Eoconusphaeraceae, Lapideacassaceae, Microrhabdulaceae, Nannoliths inc sed - radiate multielement, Nannoliths inc sed - other

Distinguishing features:
Parent taxon (Nannoliths inc sedis): Nannofossils not obviously homologous with heterococcoliths, holococcoliths, or braarudosphaeralids
This taxon: Nannolith genera without clear affinities to any other genera

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Ceratolithina Monocrystalline, straight or hooked, rod-like nannoliths with lateral spurs and/or blades.	C. bicornuta C. capitanea C. copis C. cruxii C. duplex C. hamata C. naturalisteplateauensis C. sp.
	Ceratolithoides Conical, arrowhead- or horseshoe-shaped nannoliths. Constructed from two basal rectangular to rhombic elements and a narrow, apical, conical structure.	C. verbeekii C. aculeus C. brevicorniculans C. sagittatus C. arcuatus C. quasiarcuatus C. sesquipedalis C. indiensis C. longissimus C. perangustus C. prominens C. ultimus C. dongenii C. ohalloraniae C. kamptneri C. amplector C. pricei C. self-trailiae C. sp.
	Liliasterites Nannoliths with six rays, with alternate rays lying in different planes.	L. angularis L. atlanticus L. sp.
	Marthasterites Three-rayed monocrystaline nannoliths; ray tips may have terminal projections. Non-birefringent in plan view.	M. crassus M. furcatus M. inconspicuus M. simplex M. sp.
	Orthogonoides Nannolith with six orthogonal rays.	O. hamiltoniae O. sp.
	Rhomboaster Monocrytsalline rhombic nannolith	R. svabenickiae
	Tripinnalithus Elongate to diamond nannoliths with triradiate cross-section, c-axis parallel to nannolith length.	T. shetlandensis T. sp.
	Watkinsia Large, narrowly elliptical, structureless base from which a broad, flat blade emerges.	W. pedalion W. sp.

Taxonomy:

Citation: Incertae sedis nannoliths

Rank: informal group of genera

Farinacci & Howe catalog pages: Nannoliths inc sed - other [no catalog entry yet]

Morphology: Includes diverse nannoliths that are non-radiate. Apart from Ceratolithoides these are also all formed of a single crysytal unit (and so behave optically as one crystal).

Search data:

Tags	LITHS:
Metrics	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 Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Sinemurian Stage (68% up, 193.5Ma, in Sinemurian 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: Nannoliths inc sedis

References:

Nannoliths inc sed - other compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-10-2021

Taxon Search:

Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10787 Go to Archive.is to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information

1000

Notify me of new comments via email.

Remember my form inputs on this computer.