Membranosphaera maastrichtica

*maastrichtica Samoilovitch in Samoilovitch and Mtchedlishvili, 1961, p.252, pl.83, figs.1a–d,2a–d,3,4a–d.  Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.83, figs.1a–d.  Samoilovitch and Mtchedlishvili (1961) expressly cited this taxon as a species; it was therefore not a new combination in Lentin and Williams (1973, p.94).  See also Elytrocysta druggii.  Age: Santonian–late Eocene.

Parent: Membranosphaera

Infrataxon List:

Membranosphaera maastrichtica subsp. maastrichtica
Membranosphaera maastrichtica subsp. pilata
"Membranosphaera maastrichtica var. maastrichtica"
"Membranosphaera maastrichtica var. pilata"