Membranosphaera bulluliniformis forma typica
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"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
