Nannotax3 - ntax_cenozoic - Bekelithella

Bekelithella


Classification: ntax_cenozoic -> Isochrysidales -> Noelaerhabdaceae -> Bekelithella
Sister taxa: Emiliania, Gephyrocapsa, Pseudoemiliania, Reticulofenestra, Noelaerhabdus, Bekelithella, Pyrocyclus

Daughter taxa (time control age-window is: 0-800Ma)
Bekelithella echinata
Like Reticulofenestra but with circlet of small spines formed from inner tube.
Bekelithella sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Bekelithella (Bona and Gal, 1985)
Rank: Genus
Basionym: Bekelithella Bona and Gal, 1985
Type species: Bekelithella echinata Bóna & Gál 1985

Distinguishing features:
Parent taxon (Noelaerhabdaceae): Heterococcoliths with Reticulofenestra-type structure, V-units vestigal, R-units forming grill, both shields, and two-layered tube
This taxon: With ring of short spines extending from inner tube

Farinacci & Howe catalog pages: Bekelithella *


Morphology:

Like Reticulofenestra but with circlet of small spines formed from inner tube

Size:


Ecology & Biogeography: : Endemic to the central Paratethys.

Most likely ancestor: Reticulofenestra - at confidence level 0 (out of 5). Data source: e.g. Perch-Nielsen 1985.

Search data:
LITHS: placolith, elliptical, CA: ca_conjunct, grill, vacant,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
Lith size: 3->6µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Pannonian, equivalent of NN10 or 11
Last occurrence (top): in upper part of Tortonian Stage (76% up, 8.3Ma, in Tortonian stage). Data source: Total of range of species in this database
First occurrence (base): in mid part of Tortonian Stage (48% up, 9.5Ma, in Tortonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bona, J. & Gal, M. (1985). Kalkiges Nannoplankton im Pannonien Ungarns (Calcareous nannoplankton in Pannonian Hungary). In, Papp, A. (ed.) Chronostratigraphie und Neostratotypen, Miozän der Zentral Paratethys, Bd VII, M6 Pannonien (Slovenien und Serbien). Akademiai Klado, VOL: 482-515. gs

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs V O


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Bekelithella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-9-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=67 Go to Archive.is to create a permanent copy of this page - citation notes



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