Cribroperidinium crispum (Wetzel, 1967a, p.870, pl.15, figs.4a-b) Fenton, 1981, p.255. Emendations: Sarjeant, 1980b, p.119-120, as Hystrichosphaeridium crispum; Fenton, 1981, p.255,257, as Cribroperidinium crispum.

Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly Millioudodinium, fourthly Hystrichogonyaulax, fifthly (and now) Cribroperidinium, sixthly Acanthaulax. Poulsen (1996, p.77) retained this species in Cribroperidinium.
Holotype: W. Wetzel, 1967, pl.15, figs.4a-b
Age: Middle Jurassic

Poulsen 1996, p. 77
Cribroperidinium crispum (Wetzel 1967) Fenton 1981
Gonyaulax crispa Wetzel, 1967, p. 870, pl. 15, figs. 4a-b.
Gonyaulacysta crispa (Wetzel, 1967), Sarjeant, 1969, p. 9.
Milliodinium crispum (Wetzel, 1967), Stover and Evitt, 1978, p. 173.
Hystrichogonyaulax crispa (Wetzel, 1967), Sarjeant, 1980, p. 119, emend. Sarjeant, 1980, p. 119.
Cribroperidinium crispum (Wetzel, 1967), Fenton, 1981, p. 255.
Acanthaulax crispa (Wetzel, 1967) Woollam and Riding, 1983, p. 3.
Remarks. Acanthaulax crispa is referred to Cribroperidinium as proposed by Fenton (1981).