Discoaster binodosus

Classification: Coccolithophores -> Discoasterales -> Discoasteraceae -> Discoaster -> D. nodifer group -> Discoaster binodosus
Sister taxa: D. cruciformis, D. colletii, D. gemmifer, D. mediosus, D. binodosus, D. nodifer, D. distinctus, D. septemradiatus, D. tanii, D. tani ornatus, D. istanbulensis, D. martinii, D. williamsii, D. backmanii, D. okadai,

Distinguishing features: Usually 8 rays with free ray length that approaches half the diameter of the central area or greater and prominent lateral nodes and pointed ray tips.


Citation: Discoaster binodosus Martini, 1958
Rank: Species
Notes & discussion: Intergrades with D. mediosus (see Remarks for that species).

Farinacci & Howe catalog pages: Discoaster binodosus * Discoaster binodosus binodosus * Discoaster mirus * Discoaster monstratus * Discoaster stradneri * Helio-discoaster binodosus * Helio-discoaster mirus *

Distinguishing features: Usually 8 rays with free ray length that approaches half the diameter of the central area or greater and prominent lateral nodes and pointed ray tips.

Search data:
TagsLITHS: nannolith-radiate, star-shaped, RIM: free-rays-long, tips w lateral nodes,
CSPH: not known, V-UNITS: all, R-UNITS: none, DETAILS: 1ou,
MetricsLith size: 8->17µm; Segments: 8->8;
Sources: size from Romein 1979 & OD
The morphological data given here can be used on the advanced search page. See also these notes

See also: Discoaster mediosus - similar but central area broader;Discoaster nodifer - similar but central area narrower;;

Geological Range:
Last occurrence (top): within NP15c subzone (42.87-44.12Ma, top in Lutetian stage). Data source: PRB entry to Nannotax
First occurrence (base): within NP10 zone (54.17-55.86Ma, base in Ypresian stage). Data source: PRB entry to Nannotax

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 binodosus, synonyms included - Discoaster binodosus; Discoaster binodosus binodosus; Discoaster binodosus subsp. binodosus; Discoaster minimus; Discoaster mirus; Discoaster monstratus; Discoaster binodosus; testttspace-time plot :: Samples map :: Parent: D. nodifer group


    Deflandre, G., (1952). Classe des Coccolithophoridés. (Coccolithophoridae. Lohmann, 1902). In: Grassé, P.P. (Editor), Traite de Zoologie. Masson, Paris, pp. 439-470.GS

    Martini, E., (1958). Discoasteriden und verwandte Formen im NW-deutschen Eozän (Coccolithophorida). 1. Taxonomische Untersuchungen. Senckenbergiana lethaea, 39: 353-388.GS

    Romein, A.J.T., (1979). Lineages in Early Paleogene calcareous nannoplankton. Utrecht Micropaleontological Bulletins, 22: 231.GS

    Theodoridis, S., (1983). On the legitimacy of the generic name Discoaster Tan 1927 ex Tan 1931. Newsletter of the International Nannoplankton Association, 5(1): 15-21.GS

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


    Discoaster binodosus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-3-2019

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=454 Go to Archive.is to create a permanent copy of this page - citation notes

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