Pontosphaera perforomarginata Bown, 2005
Description: Large elliptical Pontosphaera with a plate that is pierced by small pores and two central longitudinal holes that define a conjunct bar. The plate thickens towards the edge but the rim is difficult to distinguish in XPL.
Remarks:
Holotype: Paratype:
Neogene: Pontosphaera
Paleogene: Pontosphaera perforomarginata