Cyclagelosphaera riyadhensis

Varol, 2006 Jun 02, 2025

Set number: 1771

  • Cyclagelosphaera riyadhensis 3794 1
  • Cyclagelosphaera riyadhensis 3795 2
    10µm
DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean

Set number: 1770

  • Cyclagelosphaera riyadhensis 3793 1
  • Cyclagelosphaera riyadhensis 3792 2
    10µm
DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean
Final Epithet
Cyclagelosphaera riyadhensis Varol, 2006
Basionym

Cyclagelosphaera riyadhensis Varol, 2006

Remarks

Large (10.0-12.0 μm) species of Cyclagelosphaera have a closed central area and often display first-order yellow to second-order blue interference colours.

References

Varol, O. 2006. Didemnid ascidian spicules from the Arabian Peninsula. Journal of Nannofossil Research. 28(1): 35-54.

Taxonomy
Cyclagelosphaera
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Early Cretaceous
          • -
            • Hauterivian
              • Late Hauterivian
            • Valanginian
Stratigraphic Range
Valanginian - Hauterivian
Age (Ma)
133.70? - 129.30
Holotype
Cyclagelosphaera riyadhensis 3795

Cyclagelosphaera riyadhensis Varol, 2006

Kimmeridgian

Diplomat outcrop, Sample D-68 , near Riyadh , Riyadh-Mecca highway, central Saudi Arabia