Cyclagelosphaera rotaclypeata


Classification: Mesozoic -> Watznaueriales -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera rotaclypeata
Sister taxa: C. margerelii, C. alta, C. reinhardtii, C. rotaclypeata, C. shenleyensis, C. argoensis, C. brezae, C. centrumelliptica, C. deflandrei, C. jiangii, C. lacuna, C. wiedmannii, C. sp.,

Distinguishing features: Cyclagelosphaera with relatively wide central area filled with radial elements.


Taxonomy:

Citation: Cyclagelosphaera rotaclypeata Bukry, 1969
Rank: Species
Synonyms: Cyclagelosphaera specioclypeata Bukry, 1969 (according to Verbeek 1977)

Farinacci & Howe catalog pages: Cyclagelosphaera rotaclypeata * , Coptolithus virgatus * , Cyclagelosphaera specioclypeata *

Distinguishing features: Cyclagelosphaera with relatively wide central area filled with radial elements.


Morphology remarks: Bukry (1969) illustrated both circular and sub-cicular specimens

Size: Type diameter 6.4µm.

Geological Range:
Last occurrence (top): within NP1 zone (65.47-66.04Ma, top in Danian stage). Data source: Burnett 1998
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Burnett 1998

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: Cyclagelosphaera rotaclypeata, synonyms included - Cyclagelosphaera rotaclypeata; space-time plot :: Samples map :: Parent: Cyclagelosphaera

    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

    Verbeek, J. W. (1977). Calcareous nannoplankton biostratigraphy of Middle and Upper Cretaceous deposits in Tunisia, southern Spain and France. Utrecht Micropaleontological Bulletin. 16: 1-157. gs


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    Cyclagelosphaera rotaclypeata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-8-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10349 Go to Archive.is to create a permanent copy of this page - citation notes



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