overview (8)
Arkhangelskiales (2)
Eiffellithales (3)
Holococcoliths (26)
Nannoliths (10)
Podorhabdales (7)
Watznaueriales (1)
Helicosphaera truempyi Biolzi and Perch-Nielsen, 1982
Description: Like H. carteri but central-area open, spanned by horizontal disjunct bar.
Remarks:
Range: NP25 to lower NN1.
Original description:
Neogene: Helicosphaera; Helicosphaera truempyi