Helicopontosphaera heezenii Bukry, 1971b
Helicosphaera heezenii (Bukry, 1971b) Jafar & Martini, 1975
Bukry, D., 1971b. Cenozoic calcareous nannofossils from the Pacific Ocean. - San Diego Society of Natural History Transactions 16, 303-327.
Jafar, S. A., Martini, E., 1975, On the validity of the calcareous nannoplankton genus Helicosphaera. Senckenbergiana Lethaea 56, 381-397.
Helicopontosphaera heezenii
Bukry, 1971
Eocene