Diplotsekouri francisjosephii

Varol, 2025 May 02, 2025

Set number: 671

  • Diplotsekouri francisjosephii 27930 1
  • Diplotsekouri francisjosephii 27933 2
  • Diplotsekouri francisjosephii 27934 3
  • Diplotsekouri francisjosephii 27937 4
  • Diplotsekouri francisjosephii 27931 5
  • Diplotsekouri francisjosephii 27932 6
  • Diplotsekouri francisjosephii 27935 7
  • Diplotsekouri francisjosephii 27936 8
    10µm
DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 672

  • Diplotsekouri francisjosephii 1882 1
  • Diplotsekouri francisjosephii 1883 2
    10µm
DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean
Final Epithet
Diplotsekouri francisjosephii Varol, 2025
Basionym

Diplotsekouri francisjosephii Varol, 2025

Diagnosis

Species of Diplotsekouri are characterised by having a sharply tapering conical wider blade with first-order whitish-grey interference colours in the plan view and a narrow vestigial blade. Diplotsekouri francisjosephii displays parallel extinction (extinction angle is 0°) and exhibits length-fast (-) elongation.

Etymology

In honour of Francis Joseph Varol, Baildon, Yorkshire, United Kingdom

Dimensions Of Holotype

Length = 6.05 μm; Width of wider blade = 4.95 μm; Width of narrow blade = 0.63 μm

Remarks

Diplotsekouri francisjosephii differs from Diplotsekouri indianica in having a sharply truncated, wider blade without a terminal ridge.

References

Varol, O. 2025. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222

Taxonomy
Diplotsekouri
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Neogene
        • Miocene
          • Early Miocene
            • Aquitanian
Stratigraphic Range
Aquitanian
Age (Ma)
22.90 - 22.32
Zone(s)
NN1 - NN2
Holotype
Diplotsekouri francisjosephii 1882 Diplotsekouri francisjosephii 1882

Diplotsekouri francisjosephii Varol, 2025

Early Miocene

DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean