Membranosphaera bulluliniformis forma typica

"forma typica" Malyavkina in Samoilovitch and Mtchedlishvili, 1961, p.253–254, pl.84, figs.1a–b,2a–b,3.  Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.84, figs.1a–b.  Name illegitimate — nomenclatural senior synonym: Membranosphaera bulluliniformis subsp. bulluliniformis, which has the same holotype.  Age: Late Jurassic–Late Cretaceous.

Parent: Membranosphaera bulluliniformis