Sphenolithus runus

Bown & Dunkley Jones, 2006 May 11, 2021
Final Epithet
Sphenolithus runus Bown & Dunkley Jones, 2006
Basionym

Sphenolithus runus Bown & Dunkley Jones, 2006

Remarks

The apical spine of Sphenolithus runus has parallel extinction (extinction angle is 0°) whereas the apical spine of Sphenolithus strigosus has an inclined extinction (extinction angle at 45°). The apical spines of Furcatolithus obtusus have oblique extinction (extinction angle is about 22°).

References

Bown, P. R., Dunkley Jones, T., 2006. New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research 28(1), 17-34.

Taxonomy
Sphenolithus
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Paleogene
        • Eocene
          • Late Eocene
          • Middle Eocene
            • Bartonian
            • Lutetian
Stratigraphic Range
Lutetian - Bartonian
Age (Ma)
48.07? - 40.80
Holotype
S runus3 S runus1 S runus2

Sphenolithus runus Bown & Dunkley Jones, 2006

Middle Eocene

TDP Site 13, Pande, Tanzania