Discoaster nobilis


Classification: Coccolithophores -> Discoasterales -> Discoasteraceae -> Discoaster -> D. multiradiatus group -> Discoaster nobilis
Sister taxa: D. delicatus, D. multiradiatus, D. lenticularis, D. wemmelensis, D. mohleri, D. nobilis, D. salisburgensis, D. barbadiensis, D. spinescens, D. kuepperi, D. splendidus, D. diastypus, D. bifax,

Taxonomy:

Citation: Discoaster nobilis Martini, 1961
Rank: Species
Variants: Discoaster lubinaensis Bystricka (1966) - described as similar but with straight rays with undulating edges. These are probably both effects of poor preservation

Distinguishing features: 7-13 tapering rays with simple rounded tips that radiate with little free length from a large circular central area.

Farinacci & Howe catalog pages: Discoaster nobilis * , Discoaster lubinaensis *

Search data:
TagsLITHS: nannolith-radiate, rosette-shaped, RIM: free-rays-short,
CSPH: not known, V-UNITS: all, R-UNITS: none, DETAILS: 1ou,
MetricsLith size: 6->20µm; Segments: 7->11;
Sources: size from OD & Romein 1979
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP9 zone (55.86-57.21Ma, top in Ypresian stage). Data source: PRB entry to Nannotax
First occurrence (base): in upper part of NP8 zone (80% up, 57.5Ma, in Thanetian stage). Data source: Agnini et al. 2007, fig. 9

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 nobilis, synonyms included - Discoaster lubinaensis; Discoaster nobilis;
  • space-time plot :: Samples map :: Parent: D. multiradiatus group

    References:

    Agnini, C., Fornaciari, E., Raffi, I., Rio, D., Rohl, U. & Westerhold, T. (2007). High-resolution nannofossil biochronology of middle Paleocene to early Eocene at ODP Site 1262: Implications for calcareous nannoplankton evolution. Marine Micropaleontology. 64: 215-248. gs

    Bystricka, H. (1966). Nouvelles especes du genre Discoaster du Paleogene des Karpates Occidentales. Geologicky Sbornik. 17: 237-240. gs

    Martini, E. (1961). Nannoplankton aus dem Tertiär und der obersten Kreide von SW-Frankreich. Senckenbergiana Lethaea. 42: 1-32. gs

    Okada, H. & Thierstein, H. R. (1979). Calcareous nannoplankton - Leg 43, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 43: 507-573. gs

    Theodoridis, S. (1984). Calcareous nannofossil biostratigraphy of the Miocene and revision of the helicoliths and discoasters. Utrecht Micropaleontological Bulletin. 32: 1-271. gs


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    Discoaster nobilis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-12-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=488 Go to Archive.is to create a permanent copy of this page - citation notes



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