Cyclagelosphaera casarubrensis

Black, 1973 May 25, 2025

Set number: 1745

  • Cyclagelosphaera casarubrensis 8986 1
  • Cyclagelosphaera casarubrensis 8989 2
  • Cyclagelosphaera casarubrensis 8988 3
    10µm
Folkestone, England
Final Epithet
Cyclagelosphaera casarubrensis Black, 1973
Basionym

Cyclagelosphaera casarubrensis Black, 1973

Remarks

Species of Cyclagelosphaera exhibit a closed central area by broad, slightly distally protruding double tube cycles. The extinction lines are dextrogyre on the distal side, and their typical angle is about 73° on the distal shield and 60° on the tube cycle. Cyclagelosphaera casarubrensis differs from Cyclagelosphaera margerelii in that it has broader tube cycles.

References

Black, M. 1973. British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). Palaeontographical Society Monograph 127: 49-112.

Taxonomy
Cyclagelosphaera
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • -
            • Cenomanian
              • Early Cenomanian
        • Early Cretaceous
          • -
            • Albian
              • Early Albian
Stratigraphic Range
Early Albian - Early Cenomanian
Age (Ma)
113.20? - 96.24?
Zone(s)
CC8 - CC9
Holotype

Cyclagelosphaera casarubrensis Black, 1973

Middle Albian

Mildenhall, Southeastern England.