Final Epithet
Helicosphaerella moorkensii (Steurbaut, 1983) Aubry, Liu, de Vargas, & Probert in Aubry & Bord, 2009

Helicosphaera moorkensii Steurbaut, 1983


Aubry, M. -P., Bord, D., 2009. Reshuffling the cards in the photic zone at the Eocene/Oligocene boundary. In: Koeberl, C., Montanari, A. (eds), The Late Eocene Earth-Hothouse, Icehouse, and Impacts. Geological Society of America, Special Papers 452, 279-301.

Steurbaut, E., 1983. The stratigraphic position of the Lower Oligocene Yrieu Sainds (SW France, based on calcareous nannofossils and a new Helicosphaera species. Eclogae Geologicae Helvetiae 76(2), 327-331