together with Helicosphaera neogranulata
Helicosphaera princei da Gama & Varol 2013
da Gama, R. O. B. P. & Varol, O., (2013): New Late Oligocene to Miocene Species. - Journal of Nannoplankton Research. 33(1): 1-12.
Helicosphaera princei
da Gama & Varol, 2013
Holocene
Anglesey, North Wales