Distinguishing features: Cretarhabdids with relatively broad shields; central area spanned by blocky diagonal cross; outline may be asymmetric.
Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | Flabellites oblongus 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. | |||
Flabellites sp. Specimens not identified to species level |
Taxonomy:
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:Tags | LITHS: placolith, asymmetric, elliptical, CA: ca_disjunct, diagonal cross, CROSS-POLARS: rim-unicyclic, R-prominent, |
Metrics | Lith size: 6->9µm; Data source notes: size range of included species |
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:
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 V O Thierstein, H. R. (1973). Lower cretaceous calcareous nannoplankton biostratigraphy. Abhandlungen der Geologischen Bundesanstalt. 29: 3-52. gs V OReferences:
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Flabellites compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10451 Go to Archive.is to create a permanent copy of this page - citation notes |