Rhaetogonyaulax (Sarjeant, 1963b, p.354; text-figs.2 [right]-3), Sarjeant, 1969, p.15.

NOW Rhaetogonyaulax rhaetica subsp. chaloneri. Originally Gonyaulax chaloneri (motile stage), subsequently Rhaetogonyaulax chaloneri, thirdly Rhaetogonyaulax rhaetica var. chaloneri, fourthly (and now) Rhaetogonyaulax rhaetica subsp. chaloneri.
This combination was not validly published in Sarjeant (1966b, p.153), since that author did not fully reference the basionym.

Holotype: Sarjeant, 1963, text-figs.2(right)-3
Age: Late Triassic