Pachygonosaurus

Pachygonosaurus (meaning "thick angled (vertebrae) lizard") is a dubious genus of ichthyosaur, possibly belonging to the Cymbospondylidae. The holotype, two vertebrae, were discovered in a layer of the Buntsandstein, near Silesia, Poland. The genus was created in 1916 by Friedrich von Huene but the epithet was not added util 1997. The type, and only species, is Pachygonosaurus robustus.

References 

Category:Ichthyosaurs
Category:Nomina dubia