Gonyaulacysta jurassica var. longicornis

var. longicornis (Deflandre, 1939a, p.171, pl.6, fig.6) Downie and Sarjeant, 1965, p.115.  Emendation: Sarjeant, 1982b, p.31, as Gonyaulacysta jurassica subsp. adecta var. longicornis.  Holotype: Deflandre, 1939a, pl.6, fig.6; Jan du Chêne et al., 1986a, pl.37, figs.7-8.  Originally Gonyaulax jurassica var. longicornis (Appendix B), subsequently Gonyaulacysta jurassica var. longicornis, thirdly Gonyaulacysta jurassica subsp. longicornis, fourthly (and now) Gonyaulacysta jurassica subsp. adecta var. longicornis.  Taxonomic junior synonym: Gonyaulax (as Gonyaulacysta) jurassica subsp. brevis, according to Sarjeant (1982b, p.31).  Age: Oxfordian. Parent: Gonyaulacysta jurassica