Phthanoperidinium stoveri
From dinoflaj2
"stoveri" (Liengjarern et al., 1980, p.490-491, pl.54, fig.7) Islam, 1982, p.313. Holotype: Liengjarern et al., 1980, pl.54, fig.7; Fensome et al., 1995, fig.1 - p.1807. NOW Vectidinium. Originally (and now) Vectidinium, subsequently Phthanoperidinium. Age: Late Eocene-Early Oligocene.
Parent: Phthanoperidinium