Solidopons petrae


Classification: ntax_cenozoic -> Coccolithales -> Coccolithaceae -> Solidopons -> Solidopons petrae
Sister taxa: S. petrae, S. sp.

Taxonomy:

Citation: Solidopons petrae Theodoridis, 1984
Rank: Species
Taxonomic discussion: This species is very rare but highly distinctive. Its range in the Indian Ocean (Young 1987) is similar to that recorded by Theodoridis (1984) in the Mediterranean. In the absence of electron micrographs it is difficult to be confident of the structure but in cross-polars the rim strongly resembles that of Coccolithus pelagicus, hence inclusion in the Coccolithaceae seems reasonable. The bridge is strongly birefringent, with inclined extinction.

Distinguishing features: Elliptical placolith with narrow rim and wide central-area spanned by disjunct transverse bridge.

Farinacci & Howe catalog pages: S. petrae *


Size: About 4 - 8 µm, based on illustrated specimens

Search data:
TagsLITHS: placolith, elliptical, CA: bar,
CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 4->8µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NN9 zone (9.53-10.55Ma, top in Tortonian stage). Data source: Young 1998
First occurrence (base): within NN3 zone (17.95-19.00Ma, base in Burdigalian stage). Data source: Young 1998

Plot of occurrence data:

References:

Theodoridis, S. (1984). Calcareous nannofossil biostratigraphy of the Miocene and revision of the helicoliths and discoasters. Utrecht Micropaleontological Bulletin. 32: 1-271. gs V O

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs V O


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Solidopons petrae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1251 Go to Archive.is to create a permanent copy of this page - citation notes



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