(8)
Nannoliths (5)
Braarudosphaeraceae (2)
Braarudosphaera (1)
Braarudosphaera bigelowii
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.
Range: Cretaceous to Recent.