Helicosphaera robinsoniae Bown & Dunkley Jones, 2012
Bown, P. R. & Dunkley Jones, T. 2012. Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research 32(2): 3-51.
Varol, O. 2025. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication, 29, 222 pp.
Helicosphaera robinsoniae
Bown & Dunkley Jones, 2012
Early Oligocene
IODP Expedition 320, Hole 1334A, Pacific Ocean