Gonyaulacysta helicoidea "var. helicoidea". Autonym. Holotype: Eisenack and Cookson, 1960, pl.1, fig.4; Jan du Chêne et al., 1986a, pl.40, figs.4-5. Now redundant. Originally Gonyaulax helicoidea var. helicoidea, subsequently Gonyaulacysta helicoidea var. helicoidea.