Discoaster gemmeus

Stradner, 1959b Sept 15, 2026

Set number: 4572

  • Discoaster gemmeus 43537 1
  • Discoaster gemmeus 43536 2
  • Discoaster gemmeus 43534 3
  • Discoaster gemmeus 43535 4
  • Discoaster gemmeus 43538 5
  • Discoaster gemmeus 43533 6
    10µm
Discoaster gemmeus, Late Paleocene, DSDP Leg 39, Sites 354, Ceará Rise, North Atlantic Ocean

Set number: 4573

  • Discoaster gemmeus 45362 1
  • Discoaster gemmeus 45361 2
  • Discoaster gemmeus 45360 3
  • Discoaster gemmeus 45359 4
    10µm
Discoaster gemmeus, Late Paleocene, DSDP Leg 39, Sites 354, Ceará Rise, North Atlantic Ocean
Final Epithet
Discoaster gemmeus Stradner, 1959b
Basionym

Discoaster gemmeus Stradner, 1959b

References

Stradner, H. 1959b. First report on the discoasters of the Tertiary of Austria and their stratigraphic use. Proceedings of the Fifth World Petroleum Congress. 1: 1081-1095.

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
            • Thanetian
Stratigraphic Range
Thanetian
Age (Ma)
59.24? - 56.00