Palaeoperidinium sibiricum

"sibiricum" (Vozzhennikova, 1967, p.106–107, pl.46, figs.2,5) Lentin and Williams, 1976, p.111.  Holotype: Vozzhennikova, 1967, pl.46, fig.2, lost according to Lentin and Vozzhennikova (1990, p.63).  Lectotype: Lentin and Vozzhennikova, 1990, pl.7, fig.3; text-fig.34, designated by Lentin and Vozzhennikova (1990, p.63).  Originally Pentagonum, subsequently Palaeoperidinium.  Taxonomic senior synonym: Peridinium (now Palaeoperidinium) pyrophorum, according to Lentin and Vozzhennikova (1990, p.61).  Age: Paleocene.

Parent: Palaeoperidinium