Pentagonum sibiricum

"*sibiricum" Vozzhennikova, 1967, p.106–107, pl.46, figs.2,5.  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 (generic name illegitimate), subsequently Palaeoperidinium.  Taxonomic senior synonym: Peridinium (now Palaeoperidinium) pyrophorum, according to Lentin and Vozzhennikova (1990, p.61).  Following I.C.N. Article 55.1, the specific name Pentagonum sibiricum was validly published in Vozzhennikova (1967) even though the generic name Pentagonum is illegitimate.  As indicated by Vozzhennikova (1963, p.183) and confirmed by Vozzhennikova (1967, p.106), the specimens illustrated in Vozzhennikova (1963, text-figs.17a–b) are specimens of Pentagonum sibiricum, even though the caption identifies them as Pentagonum conicoides.  The name Pentagonum sibiricum was not validly published in Vozzhennikova (1963) since no holotype was designated.  Age: Paleocene.

Parent: Pentagonum_Vozzhennikova 1963