Discoaster cf.mediosus

Bramlette & Sullivan, 1961 Sept 15, 2026

Set number: 4563

  • Discoaster cf mediosus 54396 1
  • Discoaster cf mediosus 54406 2
  • Discoaster cf mediosus 54407 3
  • Discoaster cf mediosus 54398 4
  • Discoaster cf mediosus 54397 5
  • Discoaster cf mediosus 54404 6
  • Discoaster cf mediosus 54405 7
  • Discoaster cf mediosus 54399 8
  • Discoaster cf mediosus 54400 9
  • Discoaster cf mediosus 54401 10
  • Discoaster cf mediosus 54402 11
  • Discoaster cf mediosus 54403 12
    10µm
Discoaster cf.mediosus, Late Paleocene, DSDP Leg 39, Sites 354, Ceará Rise, North Atlantic Ocean
Final Epithet
Discoaster cf.mediosus Bramlette & Sullivan, 1961
Basionym

Discoaster cf. 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
        • Paleocene
          • Late Paleocene
Stratigraphic Range
Late Paleocene
Age (Ma)
59.24? - 56.00