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: 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.
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 |  |  |  | Ceratolithoides
Conical, arrowhead- or horseshoe-shaped nannoliths. Constructed from two basal rectangular to rhombic elements and a narrow, apical, conical structure.
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 |  |  | | Liliasterites
Nannoliths with six rays, with alternate rays lying in different planes.
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 |  |  |  | Marthasterites
Three-rayed monocrystaline nannoliths; ray tips may have terminal projections. Non-birefringent in plan view.
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 |  |  |  | Orthogonoides
Nannolith with six orthogonal rays.
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 |  |  |  | Rhomboaster
Monocrytsalline rhombic nannolith
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 | |  | ![]() | Tripinnalithus
Elongate to diamond nannoliths with triradiate cross-section, c-axis parallel to nannolith length.
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 |  |  |  | Watkinsia
Large, narrowly elliptical, structureless base from which a broad, flat blade emerges.
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Taxonomy:
Citation: Incertae sedis nannolithsRank: informal group of genera
Farinacci & Howe catalog pages: Nannoliths inc sed - other [no catalog entry yet]
Distinguishing features: Nannolith genera without clear affinities to any other genera
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 Maastrichtian 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:
