Gonyaulacysta jurassica subsp. brevis
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"subsp. brevis" (Johnson and Hills, 1973, p.206, pl.1, figs.11,14) Lentin and Williams, 1975, p.2151. 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