Nannotax3 - ntax_mesozoic - Bukrylithus

Bukrylithus


Classification: ntax_mesozoic -> Eiffellithales -> Chiastozygaceae -> Bukrylithus
Sister taxa: Amphizygus, Archaeozygodiscus, Gorkaea, Placozygus, Reinhardtites, Tranolithus, Zeugrhabdotus ⟩⟨ Chiastozygus ⟩⟨ Staurolithites, Diadorhombus, Rhabdophidites ⟩⟨ Ahmuellerella, Bukrylithus, Diloma, Heteromarginatus, Misceomarginatus, Monomarginatus, Vacherauvillius ⟩⟨ Braloweria, Clepsilithus, Crepidolithus, Loxolithus, Neocrepidolithus, Tubirhabdus, C. - unidentified

Distinguishing features:
Parent taxon (Chiastozygaceae): Typical Eiffelithales - rim with well outer/upper clockwise-imbricate V-units and lower/inner R-units. Central area open or spanned by disjunct cross or bar supporting a spine.
This taxon: Loxolith coccoliths with narrow unicyclic rim and central area spanned by a plate incorporating broad, fibrous, tapering axial-cross-bars. Dark overall image in XPL.


Daughter taxa (time control age-window is: 0-800Ma)
Bukrylithus ambiguus
Loxolith coccoliths with narrow unicyclic rim and central area spanned by a plate incorporating broad, fibrous, tapering axial-cross-bars. Dark overall image in XPL.
Bukrylithus sp.
Specimens not identified to species level

Taxonomy:

Citation: Bukrylithus Black, 1971
Rank: Genus
Type species: Bukrylithus ambiguus Black, 1971.

Farinacci & Howe catalog pages: Bukrylithus *

Distinguishing features:
Parent taxon (Chiastozygaceae): Typical Eiffelithales - rim with well outer/upper clockwise-imbricate V-units and lower/inner R-units. Central area open or spanned by disjunct cross or bar supporting a spine.
This taxon: Loxolith coccoliths with narrow unicyclic rim and central area spanned by a plate incorporating broad, fibrous, tapering axial-cross-bars. Dark overall image in XPL.

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, plate, process, closed, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 5->8┬Ám;
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 Berriasian Stage (0% up, 145Ma, in Berriasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. gs

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


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Bukrylithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-11-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10142 Go to Archive.is to create a permanent copy of this page - citation notes



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