Discoaster moorei


Classification: Coccolithophores -> Discoasterales -> Discoasteraceae -> Discoaster -> D. exilis group -> Discoaster moorei
Sister taxa: D. exilis, D. cauliflorus, D. moorei, D. extensus, D. discissus, D. bollii, D. petaliformis, D. signus, D. apetalus,

Taxonomy:

Citation: Discoaster moorei Bukry 1971
Rank: Species

Distinguishing features: Asymetric 5-rayed discoaster with bifurcations.

Farinacci & Howe catalog pages: Discoaster moorei *


Morphology remarks: Asymetric 5-rayed specimens occur occasonally with nearly all 6-rayed discoasters and it is likely that this is not a genuine species but rather a variant of D. deflandrei and D. exilis. It is, however, commonly identified.

Search data:
TagsLITHS: nannolith-radiate, asymmetric, star-shaped, RIM: tips-bifurcate, free-rays-long,
CSPH: not known, V-UNITS: all, R-UNITS: none, DETAILS: 1ou,
MetricsLith size: 8->18µm; Segments: 5->5;
Sources: size from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Specimens can occur throughout the Miocene, and even the Oligocene, but more characteristic of the mid Miocene
Last occurrence (top): within NN5 zone (13.53-14.91Ma, top in Serravallian stage). Data source: Perch-Nielsen 1985
First occurrence (base): within NN4 zone (14.91-17.95Ma, base in Burdigalian stage). Data source: Perch-Nielsen 1985

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: Discoaster moorei, synonyms included - Discoaster moorei;
  • space-time plot :: Samples map :: Parent: D. exilis group

    References:

    Bown, P. R. & Dunkley Jones, T. (2006). New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research. 28(1): 17-34. gs

    Bukry, D. (1971a). Discoaster evolutionary trends. Micropaleontology. 17: 43-52. gs

    Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

    Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M. , Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

    Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs


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    Discoaster moorei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-10-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=484 Go to Archive.is to create a permanent copy of this page - citation notes



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