Discoaster tanii

Bramlette & Riedel, 1954 Oct 07, 2026

Set number: 4639

  • Discoaster tanii VR 32770 1
  • Discoaster tanii VR 32768 2
  • Discoaster tanii VR 32769 3
  • Discoaster tanii VR 32763 4
  • Discoaster tanii VR 32771 5
  • Discoaster tanii VR 32764 6
  • Discoaster tanii VR 32765 7
  • Discoaster tanii VR 32766 8
  • Discoaster tanii VR 32767 9
    10µm
Discoaster tanii, Middle Oligocene, DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean
Final Epithet
Discoaster tanii Bramlette & Riedel, 1954
Basionym

Discoaster tanii Bramlette & Riedel, 1954

References

Bramlette, M. N. & Riedel, W. R. 1954. Stratigraphic value of discoasters and some other microfossils related to Recent coccolithophores. Journal of Paleontology. 28: 385-403.

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
Stellate malformed
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
        • Oligocene
          • Middle Oligocene
            • Rupelian
        • Eocene
          • Middle Eocene
            • Lutetian
Stratigraphic Range
Lutetian - Rupelian
Age (Ma)
48.07? - 27.30