overview (8)
Arkhangelskiales (2)
Eiffellithales (3)
Holococcoliths (26)
Nannoliths (10)
Podorhabdales (7)
Watznaueriales (1)
Braarudosphaera Deflandre 1947 [Pontosphaera]
Description: Pentaliths approximately pentagonal, sutures go to edges of pentagon. NB In Micrantholithus sutures go to vertices of the pentagon.
Remarks:
Type species: Pontosphaera bigelowii Gran & Braarud 1935.
Original description:
Neogene: Braarudosphaera; Micrantholithus; Pontosphaera
Paleogene: Pontosphaera