Pickelhaube umbellatum Bergan, 1994
Bergen, J. A. 1994. Berriasian to early Aptian calcareous nannofossils from the Vocontian Trough (SE France) and Deep Sea Drilling Site 534: new nannofossil taxa and a summary of low-latitude biostratigraphic events. Journal of Nannoplankton Research. 16(2): 59-69.
Pickelhaube umbellatum
Bergen, 1994
Early Valanginian
DSDP Leg 76, Site 534, Blake-Bahama Basin, Atlantic Ocean