Pervilithus varius Crux, 1981
Eprolithus bettenstaedtii Mutterlose, 1992b
Specimens observed at plan view cannot be assigned to any established species. Mapping different profiles of Lapideacassis species in mobile mount may prove useful.
Lapideacassis sp. Easily distinguished from Eprolithus and Radiolithus by having an axial C axis whereas later genera have a tangential C axis.
Crux, J. A., 1981. New calcareous nannofossil taxa from the Cretaceous of South East England. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1981, 633-640.
Mutterlose, J., 1992b. Lower Cretaceous nannofossil biostratigraphy off northwestern Australia (Leg 123). Proceedings of the Ocean Drilling Program, Scientific Results 123, 343-368.