Palaeoperidinium pyrophorum

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*pyrophorum (Ehrenberg, 1837b, pl.1, figs.1,4 ex Wetzel, 1933a, p.164–165) Sarjeant, 1967b, p.246.  Emendations: Sarjeant, 1967b, p.246–247; Gocht and Netzel, 1976, p.403–405; Evitt et al., 1998, p.48–49; all as Palaeoperidinium pyrophorum.  Holotype: Ehrenberg, 1837b, pl.1, fig.4; Lejeune-Carpentier, 1938b, figs.1–4.  Originally Peridinium (Appendix B), subsequently (and now) Palaeoperidinium.  Taxonomic junior synonyms: Peridinium (as Palaeoperidinium) basilium and Palaeoperidinium deflandrei, both according to Stover and Evitt (1978, p.218); Pentagonum marginatum, Pentagonum sibiricum, and (at specific rank) Peridinium conicum subsp. larjakiense (subsequently Palaeoperidinium larjakiensis), all according to Lentin and Vozzhennikova (1990, p.61).  This combination was not validly published in Deflandre (1934, caption to text-fig.1) and Deflandre (1935, p.224) since the generic name was not validly published until 1967.  The name Peridinium pyrophorum was not validly published in Ehrenberg (1837b) and Ehrenberg (1854, caption to pl.37) since no description was provided.  Of Ehrenberg's (1837b) illustrations, only pl.1, fig.4 is of a single specimen, which thus has subsequently been accepted as the holotype.  The specimen illustrated by Sarjeant (1967b, fig.3) as the holotype appears to be a different specimen.  Age: Late Cretaceous.


Palaeoperidinium pyrophorum.jpg
Parent: Palaeoperidinium