Membranosphaera maastrichtica subsp. pilata

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