Psaligonyaulax dualis

"dualis" Brideaux and Fisher, 1976, p.18–20, pl.1, figs.4–6,8–12; pl.2, figs.1–2.  Holotype: Brideaux and Fisher, 1976, pl.1, figs.4–5; Jan du Chêne et al., 1986a, pl.37, figs.11–12.  NOW Gonyaulacysta.  Originally Psaligonyaulax, subsequently (and now) Gonyaulacysta.  Taxonomic senior synonym: Gonyaulax (as and now Gonyaulacysta) jurassica, according to Sarjeant (1982b, p.29) — however, Jan du Chêne et al. (1986a, p.131) retained Gonyaulacysta dualis.  Taxonomic junior synonym: Psaligonyaulax australis, according to Brenner (1988, p.54).  Age: late Oxfordian–late Kimmeridgian.

Parent: Psaligonyaulax