Nannotax3 - ntax_mesozoic - Uniplanarius sissinghii

Uniplanarius sissinghii


Classification: ntax_mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Uniplanarius -> Uniplanarius sissinghii
Sister taxa: U. clarkei, U. gothicus, U. sissinghii, U. trifidus, U. sp.

Distinguishing features:
Parent taxon (Uniplanarius): Stellate (triradiate or tetraradiate) nannoliths with three or four ray-like elements; there may be a small central diaphragm.
This taxon: Uniplanarius with four narrow rays with relatively long free length.


Taxonomy:

Citation: Uniplanarius sissinghii(Perch-Nielsen, 1986) Farhan 1987
Rank: Species
Basionym: Quadrum sissinghii Perch-Nielsen, 1986
Taxonomic discussion: Varol (1992) considered U. sissinghii to be a synonym of U. gothicus

Farinacci & Howe catalog pages: Q. sissinghii *

Distinguishing features:
Parent taxon (Uniplanarius): Stellate (triradiate or tetraradiate) nannoliths with three or four ray-like elements; there may be a small central diaphragm.
This taxon: Uniplanarius with four narrow rays with relatively long free length.


Morphology:


Size:


Phylogenetic relations: Farhan (1986) argued that U. sissinghii evolved from Lithastrinus quadricuspis

Search data:
LITHS: nannolith-radiate, quadrate, star-shaped, CA: closed, CROSS-POLARS: T-prominent,
Lith size: 8->25µm; Segments: 4->4;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Early Maastrichtian Substage (69.91-72.05Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): at base of UC15c subzone (0% up, 77.6Ma, in Campanian stage). Data source: Burnett 1998 (subzonal marker)

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 O

Farhan, A. (1987). Evolutionary Trend of the Genus Lithastrinus to the Genus Uniplanarius. Abhandlungen der Geologischen Bundesanstalt. 39: 57-65. gs V O

Lees, J. A. & Bown, P. R. (2005). Upper Cretaceous calcareous nannofossil biostratigraphy, ODP Leg 198 (Shatsky Rise, Northwest Pacific Ocean). Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-60. gs V O

Manivit, H. (1989). Calcareous nannofossil biostratigraphy of Leg 108 sediments. Proceedings of the Ocean Drilling Program, Scientific Results. 108: 35-69. gs V O

Perch-Nielsen, K. (1986b). New Mesozoic and Paleogene calcareous nannofossils. Eclogae Geologicae Helvetiae. 79(3): 835-847. gs V O

Sissingh, W. (1977). Biostratigraphy of Cretaceous calcareous nannoplankton. Geologie en Mijnbouw. 65(1): 37-65. gs

Varol, O. (1992b). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs O


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Uniplanarius sissinghii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 30-9-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11289 Go to Archive.is to create a permanent copy of this page - citation notes



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