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