Pterodinium circumsutum

"circumsutum" Morgenroth, 1966b, p.5, pl.1, figs.3–4.  Holotype: Morgenroth, 1966b, pl.1, fig.3.  NOW Pentadinium?.  Originally Pterodinium, subsequently (and now) Pentadinium?.  Age: early Oligocene.

Parent: Pterodinium