Cymatiosphaera philippotii Fensome et al., 1990, nom. subst. pro Cymatiosphaera membranacea (Philippot, 1949) Davey and Williams in Davey et al., 1969, p.a non Cvmatiosphaera membranacea (Deunff, 1955 ex Deunff, 1961) Stockmans and Williere, 1969.

Originally Hystrichosphaeridium membranaceum, subsequently (and now) Cymatiosphaera philippotii.
Holotype: Philippot, 1949, text-fig.3
Age: Late Cretaceous