Phthanoperidinium stoveri (Liengjarern et al., 1980) Islam, 1982

Now Vectidinium. Originally (and now) Vectidinium, subsequently Pthanoperidinium. Lentin and Williams, 1989 retained this species in Vectidinium Liengjarern et al., 1980.
Holotype: Liengjarern et al., 1980, pl.54, fig.7
Age: Late Eocene- early Oligocene