Watznaueria biporta


Classification: Mesozoic -> Watznaueriales -> Watznaueriaceae -> Watznaueria -> Watznaueria biporta
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 Watznaueria with two well-defined pores separated by a conjunct transverse bar.


Taxonomy:

Citation: Watznaueria biporta Bukry, 1969
Rank: Species

Farinacci & Howe catalog pages: Watznaueria biporta * , ,

Distinguishing features:

Large Watznaueria with two well-defined pores separated by a conjunct transverse bar.


Morphology remarks:

Both Black (1973) and Bukry (1969) illustrate specimens apparently with the remains of a grill in the pores. 

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian stage). Data source: Lees & Bown 2005 - consistently present to end Cret
First occurrence (base): within Tithonian Stage (145.01-152.06Ma, base in Tithonian stage). Data source: oral comms during Jurassic workshop, Lyon 2016 and Neptune records

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 biporta, synonyms included - Watznaueria biporta; space-time plot :: Samples map :: Parent: Watznaueria

    References:

    Black, M. (1973). British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). Palaeontographical Society Monograph. 127: 49-112. gs

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

    Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs

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    Watznaueria biporta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-7-2019

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