From Williams et al., 2017:

[Leiosphaeridia, Eisenack, 1958c, p. 2; Emendations: Downie and Sarjeant, 1963, p.94–95; Turner, 1984, p.116.
Acritarch genus.

For synonymy see Fensome et al., 1990.

Type species: Leiosphaeridia baltica, Eisenack, 1958c (pl.2, fig.5)]