Discoaster araneus

Bukry, 1971 Sept 15, 2026

Set number: 4559

  • Discoaster araneus 58699 1
  • Discoaster araneus 58700 2
  • Discoaster araneus 58698 3
  • Discoaster araneus 58701 4
    10µm
Discoaster araneus, Early Eocene, ODP Leg 171B, Site 1051A, Black Nose, Western North Atlantic

Set number: 4560

  • Discoaster araneus 67721 1
  • Discoaster araneus 67715 2
  • Discoaster araneus 67718 3
  • Discoaster araneus 67719 4
  • Discoaster araneus 67720 5
  • Discoaster araneus 67716 6
  • Discoaster araneus 67717 7
  • Discoaster araneus 67723 8
    10µm
Discoaster araneus, Early Eocene, ODP Leg 171B, Site 1051A, Black Nose, Western North Atlantic

Set number: 4562

  • Discoaster araneus 70702 1
  • Discoaster araneus 70703 2
  • Discoaster araneus 70701 3
  • Discoaster araneus 70700 4
    10µm
Discoaster araneus, Early Eocene, ODP Leg 171B, Site 1051A, Black Nose, Western North Atlantic
Final Epithet
Discoaster araneus Bukry, 1971
Basionym

Discoaster araneus Bukry, 1971

Synonyms

Discoaster aegyptiacus subsp. duwiensis El-Dawoody, 1988

Discoaster salisburgensis var. araneus (Bukry, 1971) Bralower & Self-Trail, 2016

References

Bralower, T. J. & Self-Trail, J. 2016. Nannoplankton malformation during the Paleocene-Eocene Thermal Maximum and its paleoecological and paleoceangraphic significance. Paleoceanography. 31: 1-17.

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

El-Dawoody, A. S. 1988. New calcareous nannoplankton species from the Paleocene rocks in souhern Egypt. Bulletin of the Faculty of Science, Cairo University. 56: 549-563.

Taxonomy
Discoaster
Neostellates produce interference colours
Neostellates, 3 to 6 long arm, with simple tips
Neostellates, 4 to 6 long arms with bifurcation
Neostellates, 4 to 8 arms with bifurcation
Neostellates, 6 short arms with simple tips
Neostellates, bulged central area with proximal ridges
Neostellates, bulged central area with sutural & proximal ridges
Neostellates, featureless central area with distal ridges
Neostellates, proximal ridges give rise to a third furcation
Neostellates, with distal & proximal knobs
Rosettes, >10 arms
Rosettes, proximal & distal processes, >10 arms
Stellates, 4 to 5 arms with bifurcation
Stellates, 5 to 9 arms with bifurcation & nodes
Stellates, often curved arms with simple tips
Uncategorised
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Paleogene
        • Eocene
          • Early Eocene
            • Ypresian
Stratigraphic Range
Ypresian
Age (Ma)
56.00 - 55.80