Acanthaulax tenuiceras

"?tenuiceras" (Eisenack, 1958a, p.389–391, pl.21, figs.14–15; pl.22, figs.1–3; pl.24, fig.2; text-figs.4a–c,5) Sarjeant, 1985a, p.63.  Emendations: Sarjeant, 1985a, p.63,65, as Acanthaulax tenuiceras; Jan du Chêne et al., 1986b, p.29–30, as Tehamadinium tenuiceras.  Holotype: Eisenack, 1958a, pl.21, fig.15; Sarjeant, 1985a, pl.6, figs.1–2; text-fig.3; Jan du Chêne et al., 1986a, pl.118, fig.1; Jan du Chêne et al., 1986b, pl.24, fig.5.  NOW Cribroperidinium?.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta?, thirdly Diacanthum, fourthly Occisucysta, fifthly Acanthaulax?, sixthly Tehamadinium, seventhly (and now) Cribroperidinium?.  Questionable assignment: Sarjeant (1985a, p.63).  Taxonomic junior synonym: Occisucysta victorii, according to Pöthe de Baldis and Ramos (1988, p.33).  Age: late Barremian–Aptian.

Parent: Acanthaulax