From Williams et al., 2017:

[Goniosphaeridium, Eisenack, 1969a, p. 256; Emendations: Kjellström, 1971a, p. 43; Turner, 1984, p. 111–112; Eiserhardt, 1992, p. 28.
Acritarch genus.

Tax. sr. syn.: Polygonium (acritarch), according to Le Hérissé (1989, p.181) and Sarjeant and Stancliffe (1996, p.358). For further synonymy see Fensome et al. (1990, p.232).

Type species: as Ovum hispidum subsp. polygonale, Eisenack, 1931 (pl.4, fig.19)]