Diploteichus clarus

(Bown, 2005c) Varol, n. comb. May 24, 2026

Set number: 3245

  • Diploteichus clarus VR 15903 1
  • Diploteichus clarus VR 15906 2
  • Diploteichus clarus VR 15909 3
  • Diploteichus clarus VR 15912 4
  • Diploteichus clarus VR 15904 5
  • Diploteichus clarus VR 15907 6
  • Diploteichus clarus VR 15910 7
  • Diploteichus clarus VR 15911 8
  • Diploteichus clarus VR 15918 9
  • Diploteichus clarus VR 15917 10
  • Diploteichus clarus VR 15914 11
  • Diploteichus clarus VR 15913 12
    10µm
Diploteichus clarus, Middle Albian, Ocal Creek, Colombia
Final Epithet
Diploteichus clarus (Bown, 2005c) Varol, n. comb.
Basionym

Zeugrhabdotus clarus Bown, 2005c

Optical Properties

In plan view under cross-polarised light, the outer wall and transverse bar remain in constant extinction, whereas the inner wall exhibits first-order white interference colours. The poorly preserved specimens of Placozygus species may be mistaken for Diploteichus clarus, but they exhibit strong spiralling due to the protolith outer wall. The outer wall is zeugoid in Diploteichus clarus, therefore lacking a spiralling appearance

Remarks

Small to medium species of Diploteichus have a double wall and a transverse bar. No distal process was noted.

References

Bown, P. R. 2005c. Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results 198:1-82.

Taxonomy
Diploteichus
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • Gallic
            • Turonian
              • Early Turonian
        • Early Cretaceous
          • Gallic
            • Albian
              • Middle Albian
Stratigraphic Range
Middle Albian - Early Turonian
Age (Ma)
110.22? - 92.90?
Holotype
Diploteichus clarus VR 15909 Diploteichus clarus VR 15909 Diploteichus clarus VR 15909

Zeugrhabdotus clarus Bown, 2005c

Late Albian

ODP Leg 198, Hole 1207B, Shatsky Rise, northwest Pacific.