Gonyaulacysta crassicornuta

?crassicornuta (Klement, 1960, p.38–39, pl.5, figs.1–3) Sarjeant, 1969, p.9.  Emendation: Sarjeant, 1984a, p.158–160, as Rhynchodiniopsis crassicornuta.  Holotype: Klement, 1960, pl.5, fig.1; Sarjeant, 1984a, pl.2, figs.1–2; text-fig.2; Jan du Chêne et al., 1986a, pl.45, figs.1–4.  Originally Gonyaulax (Appendix B), subsequently Gonyaulacysta?, thirdly (and now) Gonyaulacysta?, fourthly Rhynchodiniopsis.  Questionable assignment: Stover and Evitt (1978, p.158).  This combination was not validly published in Sarjeant (1966b, p.130), since that author did not fully reference the basionym.  Age: early Kimmeridgian.

Parent: Gonyaulacysta