Petrobrasiella


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Petrobrasiella
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata, Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths,

Distinguishing features: Domed-shaped holococcoliths with holes or cavities.


Daughter taxa: (blue => in age window 0-800Ma)
Large, domed-shaped holococcoliths with holes or cavities.
Specimens not identified to species level

Taxonomy:

Citation: Petrobrasiella Troelsen & Quadros, 1971
Rank: Genus
Type species: Petrobrasiella venata Troelsen & Quadros, 1971
Synonyms: Athenagalea Hattner and Wise, 1980

Farinacci & Howe catalog pages: Petrobrasiella * , Athenagalea *

Distinguishing features: Domed-shaped holococcoliths with holes or cavities.

Search data:
TagsLITHS: holococcolith, CA: pores,
MetricsLith size: 8->15µm;
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): in lower part of Maastrichtian Stage (36% up, 69.9Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Santonian Stage (0% up, 86.3Ma, in Santonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs :: ::

Hattner, J. G. & Wise, S. W. (1980). Upper Cretaceous calcareous nannofossil biostratigraphy of South Carolina. South Carolina Geology. 24: 41-117. gs :: ::

Troelsen, J. & Quadros, L. P. (1971). Distribuição bioestratigráfica dos nanofósseis em sedimentos marinhos (Aptiano-Mioceno) do Brasil. Anais da Academia Brasileira de Ciências. 43, 577-609: sulemento-. gs :: ::


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Petrobrasiella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 31-5-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10894 Go to Archive.is to create a permanent copy of this page - citation notes



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