Stomiosphaera conoidea
From dinoflaj2
"conoidea" Bonet, 1956, p.454-456, pl.22, figs.1(part)-2; pl.27, fig.1(part). Name not validly published: type not designated and generic name not validly published. Originally Stomiosphaera (name not validly published), subsequently Bonetocardiella (name not validly published), thirdly Conejoconus (name not validly published). Taxonomic synonym: Stomiosphaera cardiiformis according to Andri (1972, p.15). Designation of a holotype was a requirement under the I.C.Z.N. at the time that Bonet (1956) proposed this name. Age: mid Cretaceous.
Parent: Stomiosphaera