Gonyaulacysta jurassica subsp. longicornis

"subsp. longicornis" (Deflandre, 1939a, p.171, pl.6, fig.6) Lentin and Williams, 1973, p.62.  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.  NOW Gonyaulacysta jurassica subsp. adecta var. longicornis.  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