Nannotax3 - ntax_mesozoic - Marthasterites

Marthasterites


Classification: ntax_mesozoic -> Nannoliths inc sedis -> Nannoliths inc sed - other -> Marthasterites
Sister taxa: Ceratolithina, Ceratolithoides, Liliasterites, Marthasterites, Orthogonoides, Rhomboaster, Tripinnalithus, Watkinsia

Distinguishing features:
Parent taxon (Nannoliths inc sed - other): Nannolith genera without clear affinities to any other genera
This taxon: Three-rayed monocrystaline nannoliths; ray tips may have terminal projections. Non-birefringent in plan view.


Daughter taxa (time control age-window is: 0-800Ma)
Marthasterites crassus
Thickly calcified body and short arms
Marthasterites furcatus
Ray tips with multiple well-devloped projections
Marthasterites inconspicuus
Ray tips without terminations
Marthasterites simplex
Ray tips with nearly parallel sides and weakly-developed terminations
Marthasterites sp.
Specimens not identified to species level

Taxonomy:

Citation: Marthasterites Deflandre, 1959
Rank: Genus
Type species: Marthasterites furcatus (Deflandre in Deflandre & Fert, 1954) Deflandre, 1959
Taxonomic discussion: Most of the species included here were described as sub-species of M. furcatus and not all authors separate them.

Farinacci & Howe catalog pages: Marthasterites *

Distinguishing features:
Parent taxon (Nannoliths inc sed - other): Nannolith genera without clear affinities to any other genera
This taxon: Three-rayed monocrystaline nannoliths; ray tips may have terminal projections. Non-birefringent in plan view.


Morphology:


Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: nannolith-radiate, star-shaped, CROSS-POLARS: 1ou, V-prominent,
Lith size: 3->16µm; Segments: 3->3;
Data source notes: size range of included species
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 Campanian Stage (100% up, 72.1Ma, in Campanian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Turonian Stage (0% up, 93.9Ma, in Cenomanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O

Deflandre, G. (1959). Sur les nannofossiles calcaires et leur systématique. Revue de Micropaléontologie. 2: 127-152. gs


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Marthasterites compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-12-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10634 Go to Archive.is to create a permanent copy of this page - citation notes



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