Watznaueria cynthae


Classification: 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: Watznaueria cynthae *

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


Morphology remarks: 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: bar,
CSPH: equant, monomorphic, R-UNITS: R-prominent, DETAILS: ca_conjunct, rim-unicyclic,
MetricsLith size: 9->12µm;
Sources: 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:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Watznaueria cynthae, synonyms included - Watznaueria cynthae;
  • space-time plot :: Samples map :: Parent: Watznaueria

    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 :: view :: open

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

    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: 3-6-2020

    Taxon Search:
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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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