Munarinus


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Munarinus
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: Holococcoliths formed from 4-12 blocks with central-area filled or spanned by disjunct bar or block.


Daughter taxa: (blue => in age window 0-800Ma)
central opening spanned by subrhombic bar
rounded central block
irregular central block
central opening wide spanned by blunt-ended bar
Specimens not identified to species level

Taxonomy:

Citation: Munarinus Risatti, 1973
Rank: Genus
Type species: Munarinus lesliae Risatti, 1973

Farinacci & Howe catalog pages: Munarinus *

Distinguishing features: Holococcoliths formed from 4-12 blocks with central-area filled or spanned by disjunct bar or block.

Search data:
TagsLITHS: holococcolith, elliptical, CA: pores, bar, closed, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 4->6µm;
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): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Cenomanian Stage (0% up, 100.5Ma, in Cenomanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Risatti, J. B. (1973). Nannoplankton biostratigraphy of the Upper Bluffport Marl-Lower Prairie Bluff Chalk interval (upper Cretaceous) in Mississippi. In, Smith, L. A. & Hardenbol, J. (eds) Proceedings of the Symposium on Calcareous Nannofossils. Gulf Coast Section SEPM Publication, 8-57. gs :: ::


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Munarinus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 29-5-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10703 Go to Archive.is to create a permanent copy of this page - citation notes



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