Nannotax3 - ntax_mesozoic - Tortolithus

Tortolithus


Classification: ntax_mesozoic -> Heterococcoliths inc sedis -> muroliths inc sedis -> Tortolithus
Sister taxa: Angulofenestrellithus, Coccosphaerida, Tortolithus

Distinguishing features:
Parent taxon (muroliths inc sedis):
This taxon: Muroliths with central-area closed by overlapping plates.


Daughter taxa (time control age-window is: 0-800Ma)
Tortolithus caistorensis

Tortolithus carteri
A brightly-birefringent species of Tortolithus
Tortolithus dodekachelyon
Tortolithus with a murolith rim of 12 elements - 6 showing high birefringence and 6 low birefringence; central area with 3-5 overlapping plates showing low birefringence.
Tortolithus foramen
Minute (<1µm) and with central perforation
Tortolithus furlongii

Tortolithus hallii

Tortolithus pagei

Tortolithus polygonatus

Tortolithus sp.
Specimens not identified to species level

Taxonomy:

Citation: Tortolithus Crux in Crux et al., 1982
Rank: Genus
Type species: Tortolithus caistorensis Crux in Crux et al., 1982

Farinacci & Howe catalog pages: Tortolithus *

Distinguishing features:
Parent taxon (muroliths inc sedis):
This taxon: Muroliths with central-area closed by overlapping plates.


Morphology:


Size:


Ecology & Biogeography


Biology & life-cycles

Phylogenetic relations

Search data:
LITHS: murolith, elliptical, CA: plate, closed, CROSS-POLARS: rim-unicyclic, R-prominent,
Lith size: 2->11µm;
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 Maastrichtian Stage (100% up, 66Ma, in Danian 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:

Crux, J. A., Hamilton, G. B., Lord, A. R. & Taylor, R. J. (1982). Tortolithus gen. nov. Crux and new combinations of Mesozoic calcareous nannofossils from England. INA Newsletter. 4: 98-101. gs V O


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Tortolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 29-11-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11226 Go to Archive.is to create a permanent copy of this page - citation notes



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