Amphizygus minimus

Bukry, 1969 Aug 03, 2020

Set number: 57

  • Amphizygus minimus 9774 1
  • Amphizygus minimus 9776 2
  • Amphizygus minimus 9778 3
  • Amphizygus minimus 9772 4
  • Amphizygus minimus 9775 5
  • Amphizygus minimus 9777 6
  • Amphizygus minimus 9779 7
  • Amphizygus minimus 1542 8
    10µm
Amphizygus minimus, Campanian, Unknown

Set number: 56

  • Amphizygus minimus 885 1
  • Amphizygus minimus 886 2
  • Amphizygus minimus 887 3
  • Amphizygus minimus 888 4
    10µm
Amphizygus minimus, Middle Santonian, Arabian Peninsula
Final Epithet
Amphizygus minimus Bukry, 1969
Basionym

Amphizygus minimus Bukry, 1969

Synonyms

Amphizygus microminutus Hattner & Wise 1980

Remarks

Small species of Amphizygus differs from the other species by having an additional birefringent inner wall between the outer wall and the yoke cycle. The pores are easier to see under phase-contrast or bright field. There is no evidence for the distal process. Amphizygus minimus may need to be transferred to another new genus as suggested by having an additional inner wall and possibly lacking distal process.

References

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

Hattner, J. G. & Wise, S. W., (1980): Upper Cretaceous calcareous nannofossil biostratigraphy of South Carolina. - South Carolina Geology. 24: 41-117

Taxonomy
Amphizygus
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Late Cretaceous
          • -
            • Maastrichtian
              • Early Maastrichtian
            • Santonian
              • Middle Santonian
Stratigraphic Range
Middle Santonian - Early Maastrichtian
Age (Ma)
85.30? - 69.91?
Holotype
Amphizygus minimus 9774

Amphizygus minimus Bukry, 1969

Santonian

Saintes, France