Nannoliths inc sed - other


Ancestry: Mesozoic -> Nannoliths -> Nannoliths inc sed - other
Sister taxa: Braarudosphaeraceae, Goniolithaceae, Eoconusphaeraceae, Lapideacassaceae, Microrhabdulaceae, Nannoconaceae, Polycyclolithaceae, Nannoliths inc sed - radiate multielement, Nannoliths inc sed - other,

Short diagnosis: Nannolith genera without clear affinities to any other genera


Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa
Straight or hooked rod-like nannoliths with lateral spurs and/or blades.

Conical, arrowhead- or horseshoe-shaped nannoliths. Constructed from two basal rectangular to rhombic elements and a narrow, apical, conical structure.

Nannoliths with six rays, with alternate rays lying in different planes.

Three-rayed monocrystaline nannoliths; ray tips may have terminal projections. Non-birefringent in plan view.

Nannolith with six orthogonal rays.



Elongate to diamond nannoliths with triradiate cross-section, c-axis parallel to nannolith length.

Large, narrowly elliptical, structureless base from which a broad, flat blade emerges.

Taxonomy:

Citation: Incertae sedis nannoliths
Rank: informal group

Farinacci & Howe catalog pages:

Short diagnosis: Nannolith genera without clear affinities to any other genera


Morphology remarks: Includes diverse nannoliths that are non-radiate and/or formed of only one crystal unit.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Sinemurian Stage (190.82-199.30Ma, base in Sinemurian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:


Nannotax3 - Mesozoic - Nannoliths inc sed - other by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-3-2017

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