Gonyaulacysta jurassica subsp. jurassica var. longicornuta
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var. longicornuta Sarjeant, 1982b, p.31–32, pl.5, figs.5–6. Holotype: Sarjeant, 1982b, pl.5, figs.5–6. Age: early-middle Kimmeridgian.
Parent: Gonyaulacysta jurassica subsp. jurassica