Membranosphaera maastrichtica subsp. pilata

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subsp. pilata (Samoilovitch in Samoilovitch and Mtchedlishvili, 1961, p.253, pl.83, figs.3,4a–d) Lentin and Williams, 1973, p.94.  Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.83, fig.3.  Originally Membranosphaera maastrichtica var. pilata, subsequently (and now) Membranosphaera maastrichtica subsp. pilata.  Age: Santonian–Maastrichtian.

Parent: Membranosphaera maastrichtica