Watznaueria diaphanae

Worsley, 1971 May 15, 2026

Set number: 3203

  • Watznaueria diaphanae 2746 1
  • Watznaueria diaphanae 2745 2
  • Watznaueria diaphanae 2743 3
  • Watznaueria diaphanae 2744 4
    10µm
Watznaueria diaphanae, Late Aptian, Gargas, SE France

Set number: 3204

  • Watznaueria diaphanae 2535 1
  • Watznaueria diaphanae 2536 2
  • Watznaueria diaphanae 2537 3
  • Watznaueria diaphanae 2538 4
    10µm
Watznaueria diaphanae, Early Turonian, Angola, West Africa
Final Epithet
Watznaueria diaphanae Worsley, 1971
Basionym

Watznaueria diaphanae Worsley, 1971

Optical Properties

In plan view under cross-polarised light, the shields display white interference colours that diminish towards the periphery, where only the distal shield is present. The narrow, elongate central area shows dimmer interference colours relative to the shields. Watznaueria diaphanae displays inclined extinction lines and length-fast (–) elongation. 

Remarks

Small- to medium-sized (3.0–7.0 µm), elliptical species of Watznaueria, with a distal shield larger than the proximal shield and a poorly defined, narrow, elongate central area.

References

Worsley, T. R., 1971. Calcareous nannofossil zonation of Upper Jurassic and Lower Cretaceous sediments from the Western Atlantic. In: Farinacci, A. (ed.), Proceedings of the Second Planktonic Conference Roma 1970. Edizioni Tecnoscienza, Rome vol. 2, pp. 1301-1321.

Taxonomy
Watznaueria
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • Gallic
            • Turonian
              • Early Turonian
        • Early Cretaceous
          • Neocomian
            • Berriasian
              • Early Berriasian
Stratigraphic Range
Early Berriasian - Early Turonian
Age (Ma)
143.10? - 92.90?
Holotype
Watznaueria diaphanae 2743 Watznaueria diaphanae 2743 Watznaueria diaphanae 2743

Watznaueria diaphanae Worsley, 1971

Berriasian - Valanginian

JOIDES, DSDP, Leg 1, hole 4, Caribbean Sea.