Pontosphaera formosa (Bukry & Bramlette, 1968) Romein, 1979
Description: Large (9-17 µm) Pontosphaera with a high flaring rim that displays discernible elements in light microscope. The plate is thin and indistinct in XPL.
Remarks:
Neogene: Pontosphaera
Paleogene: Pontosphaera formosa