Set number: 336

  • Helicosphaera antistrofaobliqua 2357 1
  • Helicosphaera antistrofaobliqua 2356 2
  • Helicosphaera antistrofaobliqua 2354 3
  • Helicosphaera antistrofaobliqua 2355 4
    10µm
Helicosphaerella antistrofaobliqua, Late Oligocene, Angola, West Africa

Set number: 333

  • Helicosphaera antistrofaobliqua 456 1
  • Helicosphaera oantistrofaobliqua 455 2
  • Helicosphaera antistrofaobliqua 453 3
  • Helicosphaera antistrofaobliqua 454 4
    10µm
Helicosphaerella antistrofaobliqua, Late Oligocene, DSDP Leg 25, Site 242, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 343

  • Helicosphaera antistrofaobliqua 2328 1
  • Helicosphaera antistrofaobliqua 2327 2
  • Helicosphaera antistrofaobliqua 2325 3
  • Helicosphaera antistrofaobliqua 2326 4
    10µm
Helicosphaerella antistrofaobliqua, Late Oligocene, Angola, West Africa
Final Epithet
Helicosphaerella antistrofaobliqua Varol, in prep.
Basionym

Helicosphaerella antistrofaobliqua Varol, in prep.

Etymology

From Greek, antistrofa, reverse- referring opposite direction widening of Helicosphaerella obliqua Bramlette & Wilcoxon, 1967) Aubry, Liu, de Vargas, & Probert in Aubry & Bord (2009).

References

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.

Bramlette, M. N., Wilcoxon, J. A., 1967. Middle Tertiary calcareous nannoplankton of the Cipero section, Trinidad, W.I. Tulane Studies in Geology and Paleontology 5, 93-131.