Phthanoperidinium campoense

?campoense Caro, 1973, p.359–360, pl.4, fig.7.  Holotype: Caro, 1973, pl.4, fig.7.  Originally Phthanoperidinium, subsequently (and now) Phthanoperidinium?.  Questionable assignment: Stover and Evitt (1978, p.119).  Age: early Eocene.

Parent: Phthanoperidinium