Cribroperidinium? downiei (Sarjeant 1960) Poulsen 1996

Originally Baltisphaeridium (Appendix A), subsequently Acanthaulax, thirdly Acanthaulax?, fourthly Cyclonephelium, fifthly (and now) Cribroperidinium?. Questionable assignment: Poulsen (1996, p.77).

Holotype: Downie, 1957, pl.20, fig.10, as Hystrichosphaeridium pattei; Jan du Chêne et al., 1986a, pl.3, figs.7-9.
Age: Kimmeridgian.

Poulsen 1996, p. 77
Cribroperidinium? downiei (Sarjeant 1960) comb. nov.
Baltisphaeridium downiei Sarjeant, 1960, p. 138- 139.
Acanthaulax downiei (Sarjeant, 1960), Sarjeant, 1976, p. 6.
Cyclonephelium downiei (Sarjeant, 1960), Ioannides et al. 1977, p. 451.
Acanthaulax downiei (Sarjeant, 1960), Sarjeant, 1976, Lentin and Williams, 1977, p. 37.
Acanthaulax? downiei (Sarjeant, 1960), Sarjeant, 1976, Stover and Evitt, 1978, p. 137.
Acanthaulax downiei (Sarjeant, 1960) Sarjeant, 1976, Sarjeant, 1982, p. 47.
Remarks. Acanthaulax? downiei is provisionally included in Cribroperidinium.