From Williams et al., 2017:

[Domasiella, Eisenack, 1969a, p. 111–112
Acritarch genus, according to Stover and Evitt, 1978, and Fensome et al., 1990

Although the "type species" was not validly transferred by Eisenack (1969a), the generic name Domasiella was validly published by that author, since it is based on a previously validly published species name (I.C.N. Article 40.3).

Type species: Domasiella discophora, Cookson and Eisenack, 1962b (pl.7, fig.17)]