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Membranosphaera maastrichtica subsp. pilata

Membranosphaera maastrichtica subsp. pilata (Samoilovitch in Samoilovitch and Mtchedlishvili, 1961, p.253, pl.83, figs.3,4a-d) Lentin and Williams, 1973, p.94.

TYPE: Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.83, fig.3.

HISTORY: Originally Membranosphaera maastrichtica var. pilata, subsequently (and now) Membranosphaera maastrichtica subsp. pilata.

AGE: Santonian-Maastrichtian.


Infraspecific taxa:


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