From Williams et al., 2017:

[Ceratocystidiopsis, Deflandre, 1937b, p.89.
Acritarch genus.

Type species: Ceratocystidiopsis simplex, Deflandre, 1937b (pl.17, al. pl.14, fig.1)]

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Deflandre, 1937b, p.89] (translated from French):

Genus CERATOCYSTIDIOPSIS nov. gen.

The body of the organism, an ellipsoidal or irregular cell or shell, is enclosed in a hyaline membrane extending at the two opposite poles in a sort of horn formed by a pleated cone.
The type of the genus is Ceratocystidiopsis simplex n. sp.