Gonyaulax rhaetica Sarjeant, 1963; Emendations: Harland et al., 1975, p.862; Fisher and van Helden, 1979, p.270; Below, 1987a, p.105-106, all as Rhaetogonyaulax rhaetica.

Now Rhaetogonyaulax. Originally Gonyaulax, subsequently (and now) Rhaetogonyaulax.
Taxonomic junior synonyms: Rhaetogonyaulax testacea, Rhaetogonyaulax tortuosa and Rhaetogonyaulax uncinata, all according to Below (1987a, p.105).

Holotype: Sarjeant, 1963, text-figs.1-2(left)
Age: Late Triassic