Description: Large elliptical to almond-shaped Helicosphaera with well defined birefringent blanket in XPL and a central area spanned by a broad, oblique, disjunct birefringent bar.
Remarks:
Range: NP16 to NP17.
Holotype: Paratype:
Neogene: Helicosphaera
Paleogene: Helicosphaera clarissima