Early Miocene (3)
Discoaster (12)
Sphenolithus (20)
Helicosphaera (14)
Pontosphaera discopora Schiller, 1925
Description: Rim elevated, 3 or more several cycles of pores.
Remarks:
Original description:
Neogene: Pontosphaera; Pontosphaera discopora
Paleogene: Pontosphaera