Membranosphaera tuberculata

tuberculata Malyavkina in Samoilovitch and Mtchedlishvili, 1961, p.255, pl.84, figs.7a–b,8.  Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.84, figs.7a–b.  Malyavkina in Samoilovitch and Mtchedlishvili (1961) expressly cited this taxon as a species; it was therefore not a new combination in Lentin and Williams (1973, p.94).  Age: Oxfordian–mid Kimmeridgian.

Parent: Membranosphaera