Nannotax Enabling nannofossil research

Description: Simple unadorned plate with two large holes that define a transverse bar; the rim is narrow and not distinct in XPL. Hole size, and thus bar width, varies greatly. The bar is typically transverse but may be slightly oblique.

Remarks: This species concept is similar to that of Pontosphaera rectipons Haq, 1968 but the holotype of the latter is poor and probably not a pontosphaerid.