Nannotax3 - Mesozoic - Petrobrasiella

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)
				Petrobrasiella bownii Simialr to P. venata but with distinct base and lacking central core.
				Petrobrasiella venata Large, domed-shaped holococcoliths with holes or cavities.
				Petrobrasiella sp. 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: Athenagalea * Petrobrasiella *

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

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Santonian Stage (83.64-86.26Ma, base in Santonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Rarer genera

References:

Burnett, J.A., (1998). Upper Cretaceous. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 132-199.

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

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: suplemento.

Petrobrasiella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-2-2019

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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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