Cyclagelosphaera margerelii


Classification: Mesozoic -> Watznaueriales -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera margerelii
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: Small to medium sized Cyclagelosphaera with closed central area.


Taxonomy:

Citation: Cyclagelosphaera margerelii Noël, 1965
Rank: Species
Variants: Cyclagelosphaera puncta Black, 1973 - form with small opening in central area, probably an incomplete growth stage.
Synonyms:

Farinacci & Howe catalog pages: Cyclagelosphaera margereli * , Cyclagelosphaera puncta * , Cyclagelosphaera rotans * , Cyclagelosphaera casarubrensis * , Markalius sulcatus * ,

Distinguishing features: Small to medium sized Cyclagelosphaera with closed central area.

Geological Range:
Last occurrence (top): within Paleocene Epoch (55.96-66.04Ma, top in Thanetian stage). Data source: Bown & Cooper 1998
First occurrence (base): at base of NJ11 zone (0% up, 168.7Ma, in Bajocian stage). Data source: Bown & Cooper 1998 (fig. 4) - secondary events

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 margerelii, synonyms included - Cyclagelosphaera margerelii; 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

    Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

    Forchheimer, S. (1972). Scanning electron microscope studies of Cretaceous coccoliths from the Köpingsberg Borehole No. 1, SE Sweden. Sveriges Geologiska Undersökning; Series C. #668, 65: 1-141. gs

    Mai, H., von Salis, K., Willems, H. & Romein, A. J. T. (1997a). Fossil coccospheres from the K/T boundary section from Geulhemmerberg, The Netherlands. Micropaleontology. 43(281-302): -. gs

    Noël, D. (1965). Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Éditions du Centre National de la Recherche Scientifique, Paris. -. 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 margerelii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10347 Go to Archive.is to create a permanent copy of this page - citation notes



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