Membranosphaera bulluliniformis subsp. sphaerica (Malyavkina in Samoilovitch and Mtchedlishvili, 1961, p.254-255, pl.84, fig.4) Lentin and Williams, 1973, p.94.
TYPE: Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.84, fig.4. HISTORY: Originally Membranosphaera bulluliniformis forma sphaerica, subsequently (and now) Membranosphaera bulluliniformis subsp. sphaerica. AGE: Mid Oxfordian-mid Valanginian.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |