Stomiosphaera tenuis
From dinoflaj3
"tenuis" (I. Nagy, 1966, p.93,100–101, pl.5, fig.18) Dufour, 1968, p.1948. Holotype: I. Nagy, 1966, pl.5, fig.18. NOW Colomisphaera. Originally Cadosina, subsequently Stomiosphaera, thirdly (and now) Colomisphaera. Dufour did not reference the basionym when proposing this combination, but this was not a requirement since he was using zoological nomenclature. Age: Oxfordian.
Parent: Stomiosphaera