Acanthaulax aculeata

"aculeata" (Klement, 1960, p.42, pl.5, figs.6–9; text-fig.21) Stover and Evitt, 1978, p.137.  Holotype: Klement, 1960, pl.5, figs.6–7.  NOW Tehamadinium.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta, thirdly Acanthaulax, fourthly Occisucysta, fifthly (and now) Tehamadinium.  Age: early Kimmeridgian.

Parent: Acanthaulax