Pterodinium? makropterum (Cookson and Eisenack, 1982) Lentin and Williams, 1985

Originally Spiniferites, subsequently (and now) Pterodinium?. At the time of the transfer, Lentin and Williams, 1985 questionably included this species in Pterodinium.

Holotype: Cookson and Eisenack, 1982, pl.7, fig.2
Age: Middle Cretaceous