Bown, P. R. & Newsam, C. 2017. Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research 37(1): 25-60.
Pontosphaera wilsonii
Bown & Newsam, 2017
Middle Eocene
IODP Expedition 342, Hole U1410A, NW Atlantic Ocean.