Set number: 673

  • Diplotsekouri indianica 27885 1
  • Diplotsekouri indianica 27888 2
  • Diplotsekouri indianica 27889 3
  • Diplotsekouri indianica 27892 4
  • Diplotsekouri indianica 27886 5
  • Diplotsekouri indianica 27887 6
  • Diplotsekouri indianica 27890 7
  • Diplotsekouri indianica 27891 8
    10µm
DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean
Final Epithet
Diplotsekouri indianica Varol, 2025
Basionym

Diplotsekouri indianica Varol, 2025

Diagnosis

The species of Diplotsekouri are characterised by a truncated, wider blade with a terminal ridge and a narrower vestigial blade. Diplotsekouri indianica displays first-order whitish-grey interference colours in the plan view. Diplotsekouri indianica exhibits parallel extinction (extinction angle is 0°) and shows length-fast (-) elongation.

Etymology

After Indian Ocean

Dimensions Of Holotype

Length = 7.35 μm; Width of wider blade = 3.26 μm; Width of narrow blade = 0.65 μm

Remarks

Diplotsekouri indianica differs from Diplotsekouri francisjosephii in that it has a truncated, wider blade with a terminal ridge, whereas Diplotsekouri francisjosephii has a strongly tapering, 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