Calciosolenia alternans Bown & Dunkley Jones, 2006
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.
Calciosolenia alternans
Bown & Dunkley Jones, 2006
Middle Eocene
TDP Site 13, Pande, Tanzania