Stomiosphaera stephanoidea
From dinoflaj2
"stephanoidea" (Colom, 1935, p.12, text-fig.4b) Dufour, 1968, p.1948. Holotype: Colom, 1935, text-fig.4b. Combination not validly published: generic name not validly published. Originally Fibrosphaera (Appendix A), subsequently (and now) Stomiosphaera (combination not validly published). Dufour did not reference the basionym when proposing this combination, but this was not a requirement since he was using zoological nomenclature. Age: late Early Jurassic.
Parent: Stomiosphaera