Sphenolithus acervus Bown, 2005d
Large (>8.0µm) species of Sphenolithus having 4-5 apices in plan view.
Bown, P. R., 2005d. Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research 27(1), 21-95.
Sphenolithus acervus
Bown, 2005
Early Eocene
TDP Site 3, Mpara Hill, Tanzania