Discoaster deflandrei

Bramlette & Riedel, 1954 Jan 31, 2025
Final Epithet
Discoaster deflandrei Bramlette & Riedel, 1954
Basionym

Discoaster deflandrei Bramlette & Riedel, 1954

Description

Emended description: Hexagonal symmetrical discoaster has a wide, flat central area without ornamentation. The short and robust arms terminate in bifurcations. The inter-arm area is rounded.

Remarks

Discoaster deflandrei differs from Discoaster emblematicus by lacking sutural ridges on the distal side. The bifurcation in Discoaster deflandrei is rounded, whereas it is wrench-like in Discoaster emblematicus. Discoaster deflandrei is distinguished from Discoaster hughesii by lacking proximal bulging with ridges and sutural ridges on the distal side.

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
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Neogene
        • Miocene
          • Late Miocene
            • Tortonian
      • Paleogene
        • Eocene
          • Early Eocene
            • Ypresian
Stratigraphic Range
Ypresian - Tortonian
Age (Ma)
56.00? - 11.10
Zone(s)
NP12 - NN7
Holotype
Discoaster deflandrei 26964

Discoaster deflandrei Bramlette & Riedel, 1954

Early Oligocene

Cipero Section, Trinidad