Broinsonia ethmoquadrata

Bukry, 1969 Aug 06, 2020

Set number: 127

  • Broinsonia ethmoquadrata 14769 1
  • Broinsonia ethmoquadrata 14766 2
  • Broinsonia ethmoquadrata 14770 3
  • Broinsonia ethmoquadrata 14670 4
  • Broinsonia ethmoquadrata 14768 5
  • Broinsonia ethmoquadrata 14767 6
  • Broinsonia ethmoquadrata 14771 7
  • Broinsonia ethmoquadrata 14773 8
    10µm
Broinsonia ethmoquadrata, Late Turonian, Brezno BRI, Czech Republic

Set number: 128

  • Broinsonia ethmoquadrata 14666 1
  • Broinsonia ethmoquadrata 14662 2
  • Broinsonia ethmoquadrata 14663 3
  • Broinsonia ethmoquadrata 14668 4
  • Broinsonia ethmoquadrata 14659 5
  • Broinsonia ethmoquadrata 14660 6
  • Broinsonia ethmoquadrata 14664 7
  • Broinsonia ethmoquadrata 14667 8
    10µm
Broinsonia ethmoquadrata, Early Coniacian, Kystra kye 1, Czech Republic
Final Epithet
Broinsonia ethmoquadrata Bukry, 1969
Basionym

Broinsonia ethmoquadrata Bukry, 1969

Remarks

Species of Broinsonia having a parallel-sided axial cross with central mesh [only visible in exceptionally well-preserved specimens], a relatively larger central opening and a narrower fluted tube cycle. The axial cross is dim under polarized light, and an even darker band of elements are present along the length of the arms.

References

Bukry, D., (1969): Upper Cretaceous coccoliths from Texas and Europe. - The University of Kansas Paleontological Contributions, Article 51 (Protista 2): 1-79.

Taxonomy
Broinsonia
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • -
            • Campanian
              • Early Campanian
            • Turonian
              • Early Turonian
Stratigraphic Range
Early Turonian - Early Campanian
Age (Ma)
93.90? - 80.64?
Holotype
Broinsonia ethmoquadrata 14770

Broinsonia ethmoquadrata Bukry, 1969

Early Campanian

Lake Vaxahacie, Ellis County, Texas, USA