Early Miocene (3)
Discoaster (12)
Sphenolithus (20)
Helicosphaera (14)
Pontosphaera alta Roth, 1970
Description: Pontosphaera with an elevated, birefringent rim and a thin, low birefringence plate with a large number of small perforations.
Remarks:
Neogene: Pontosphaera
Paleogene: Pontosphaera alta