Discoaster mediosus

Bramlette & Sullivan, 1961 Sept 12, 2026

Set number: 4520

  • Discoaster mediosus 60853 1
  • Discoaster mediosus 60854 2
  • Discoaster mediosus 60849 3
  • Discoaster mediosus 60850 4
  • Discoaster mediosus 60852 5
  • Discoaster mediosus 60851 6
  • Discoaster mediosus 60847 7
  • Discoaster mediosus 60848 8
    10µm
Discoaster mediosus, Thanetian, DSDP Leg 25, Site 245, Mozambique Channel (Davie Ridge), Indian Ocean
Final Epithet
Discoaster mediosus Bramlette & Sullivan, 1961
Basionym

Discoaster mediosus Bramlette & Sullivan, 1961

References

Bramlette, M. N. & Sullivan, F. R. 1961. Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology 7(2): 129-188.

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
        • Paleocene
          • Late Paleocene
            • Thanetian
Stratigraphic Range
Thanetian - Ypresian
Age (Ma)
59.24? - 53.90