Cyclagelosphaera deflandrei

Classification: Mesozoic -> Watznaueriales -> Watznaueriaceae -> Cyclagelosphaera -> Cyclagelosphaera deflandrei
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: Large (>9µm) Cyclagelosphaera with a closed central area.

Daughter taxa: (blue => in age window 0-800Ma)
central area narrow circular to subelliptical; birefringence moderate (typically yellow)
central area wide and elliptical; birefringence high (typically yellow to red)


Citation: Cyclagelosphaera deflandrei (Manivit, 1966) Roth, 1973
Rank: Species
Basionym: Coccolithus deflandrei Manivit, 1966
Synonyms: Watznaueria deflandrei (Manivit, 1966)

Farinacci & Howe catalog pages: Coccolithus deflandrei * , ,

Distinguishing features: Large (>9µm) Cyclagelosphaera with a closed central area.

See also: Watznaueria manivitiae - similar but elliptical;

Geological Range:
Last occurrence (top): within Hauterivian Stage (130.77-133.88Ma, top in Hauterivian stage). Data source: [PRB rough estimate]
First occurrence (base): within Kimmeridgian Stage (152.06-157.25Ma, base in Kimmeridgian stage). Data source: Casellato 2010

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 deflandrei, synonyms included - Coccolithus deflandrei; Cyclagelosphaera deflandrei; Watznaueria deflandrei; space-time plot :: Samples map :: Parent: Cyclagelosphaera


    Casellato, C. E. (2010). Calcareous nannofossil biostratigraphy of Upper Callovian - Lower Berriasian successions from the Souhern Alps, North Italy. Rivista Italiana di Paleontologia e Stratigrafia. 116(3): 357-404. gs

    Manivit, H. (1966). Sur quelques coccolithes nouveaux du Néocomien. Compte Rendue Sommaire de la Société Géologique de France. 7: 267-268. gs

    Roth, P. H. (1973). Calcareous nannofossils: Leg 17 of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 17: 695-795. gs


    Cyclagelosphaera deflandrei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-7-2019

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    Short stable page link: Go to to create a permanent copy of this page - citation notes

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