Watznaueria cynthae


Classification: ntax_mesozoic -> Watznaueriales -> Watznaueriaceae -> Watznaueria -> Watznaueria cynthae
Sister taxa: W. barnesiae, W. bayackii, W. fossacincta, W. manivitiae, W. ovata ⟩⟨ W. britannica, W. reinhardtii ⟩⟨ W. biporta, W. cynthae ⟩⟨ W. contracta, W. okadai, W. quadriradiata ⟩⟨ W. fasciata, W. rawsonii, C. baticlypeata, W. sp.

Distinguishing features: Large, broadly elliptical with two variably developed central pores that pierce the inner cycle.


Taxonomy:

Citation: Watznaueria cynthae Worsley, 1971
Rank: Species

Farinacci & Howe catalog pages: W. cynthae *

Distinguishing features: Large, broadly elliptical with two variably developed central pores that pierce the inner cycle.


Morphology: These coccoliths resemble Watznaueria biporta Bukry, 1969, but are more subcircular in outline and do not routinely display clear pores. Like W. biporta all illustrated speciemns are distinctily large - at least 9µm.

Search data:
TagsLITHS: placolith, elliptical, CA: ca_conjunct, bar,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 9->12µm;
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 NC8 zone (109.94-112.95Ma, top in Albian stage). Data source: Bown 2005
First occurrence (base): within NC2 zone (139.45-144.93Ma, base in Berriasian stage). Data source: Bown 2005

Plot of occurrence data:

References:

Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs V O

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. gs V O

Worsley, T. R. (1971). Calcareous nannofossil zonation of Upper Jurassic and Lower Cretaceous sediments from the Western Atlantic. In, Farinacci, A. (ed.) Proceedings of the Second Planktonic Conference Roma 1970. Edizioni Tecnoscienza, Rome 2: 1301-1321. gs

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Watznaueria cynthae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-1-2021

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11304 Go to Archive.is to create a permanent copy of this page - citation notes
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