Gonyaulacysta jurassica var. brevis
From dinoflaj3
"var. brevis" Johnson and Hills, 1973, p.206, pl.1, figs.11,14. Holotype: Johnson and Hills, 1973, pl.1, fig.14. Originally Gonyaulacysta jurassica var. brevis, subsequently Gonyaulacysta jurassica subsp. brevis. Taxonomic senior synonym: Gonyaulax (now Gonyaulacysta) jurassica subsp. adecta var. longicornis, according to Sarjeant (1982b, p.31). Age: ?late Callovian–early Oxfordian.
Parent: Gonyaulacysta jurassica