Flabellites


Classification: Mesozoic -> Podorhabdales -> Cretarhabdaceae -> Flabellites
Sister taxa: Speetonia, Cruciellipsis, Flabellites, Grantarhabdus, Helenea, Cretarhabdus, Retecapsa, Pickelhaube, Miravetesina,

Distinguishing features: Cretarhabdids with relatively broad shields; central area spanned by blocky diagonal cross; outline may be asymmetric.


Daughter taxa: (blue => in age window 0-800Ma)
Cretarhabdid with relatively narrow central-area spanned by blocky diagonal cross; outline may be asymmetric. Typically medium to large (6-10 µm), early forms smaller.
Specimens not identified to species level

Taxonomy:

Citation: Flabellites Thierstein, 1973
Rank: Genus
Type species: Flabellites oblongus (Bukry, 1969) Crux in Crux et al., 1982.

Farinacci & Howe catalog pages: Flabellites *

Distinguishing features: Cretarhabdids with relatively broad shields; central area spanned by blocky diagonal cross; outline may be asymmetric.

Search data:
TagsLITHS: placolith, asymmetric, elliptical, CA: diagonal cross, R-UNITS: R-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 6->9µm;
Sources: 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 Coniacian Stage (96% up, 86.4Ma, in Coniacian stage). Data source: Total of range of species in this database
First occurrence (base): in lower part of Barremian Stage (30% up, 129.4Ma, in Barremian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs :: ::

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 :: view :: open

Thierstein, H. R. (1973). Lower cretaceous calcareous nannoplankton biostratigraphy. Abhandlungen der Geologischen Bundesanstalt. 29: 3-52. gs :: view :: open


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Flabellites compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-7-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10451 Go to Archive.is to create a permanent copy of this page - citation notes



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