Acanthaulax angulosa

"?angulosa" (Gitmez, 1970, p.252, pl.2, figs.4–5; text-figs.7A–B) Stover and Evitt, 1978, p.137.  Holotype: Gitmez, 1970, pl.2, figs.4–5; text-figs.7A–B; Jan du Chêne et al., 1986a, pl.2, figs.11–15.  NOW Cribroperidinium.  Originally Gonyaulacysta, subsequently Acanthaulax, thirdly Meristaulax Sarjeant, fourthly Acanthaulax?, fifthly Rhynchodiniopsis, sixthly (and now) Cribroperidinium.  Questionable assignment: Jan du Chêne et al. (1986a, p.26).  Taxonomic senior synonym: Gonyaulax (now Cribroperidinium) granulata, according to Fisher and Riley (1980, p.321) — however, Sarjeant and Gocht in Sarjeant (1984a, p.160) retained Acanthaulax? (as Meristaulax, now Cribroperidinium) angulosa.  Age: early Kimmeridgian.

Parent: Acanthaulax