Nannotax3 - ntax_mesozoic - Petrobrasiella Nannotax3 - ntax_mesozoic - Petrobrasiella


Classification: ntax_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:
Parent taxon (Rarer genera): Less common genera
This taxon: Domed-shaped holococcoliths with holes or cavities.

Daughter taxa (time control age-window is: 0-800Ma)
Petrobrasiella venata
Large, domed-shaped holococcoliths with holes or cavities.
Petrobrasiella sp.
Specimens not identified to species level


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

Farinacci & Howe catalog pages: Petrobrasiella * , Athenagalea *

Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Domed-shaped holococcoliths with holes or cavities.

Search data:
CA: holococcolith, pores,
Lith size: 8->15µm;
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 Campanian Stage (100% up, 72.2Ma, in Campanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Santonian Stage (83.65-85.70Ma, base in Santonian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:


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

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 Ciencias. 43, 577-609: suplemento-. gs


Petrobrasiella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-6-2024

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