Palaeoperidinium spinosum
From dinoflaj3
"spinosum" Cookson and Hughes, 1964, p.49, pl.8, figs.6–8. Holotype: Cookson and Hughes, 1964, pl.8, fig.8. Name not validly published: generic name not validly published until 1967. NOW Epelidosphaeridia. Originally Palaeoperidinium (name not validly published), subsequently (and now) Epelidosphaeridia. Age: early Cenomanian.
Parent: Palaeoperidinium