Pentadinium circumsutum

?circumsutum (Morgenroth, 1966b, p.5, pl.1, figs.3–4) Stover and Evitt, 1978, p.180.  Holotype: Morgenroth, 1966b, pl.1, fig.3.  Originally Pterodinium, subsequently (and now) Pentadinium?.  Questionable assignment: Stover and Evitt (1978, p.180).  Age: early Oligocene.

Parent: Pentadinium