Extinct genus of reptiles
Purranisaurus is an extinct genus of marine crocodyliform from the Middle to Late Jurassic period of Chile and Vaca Muerta of Argentina. Rusconi originally regarded "Purranisaurus potens" (the type species) to be a plesiosaur; however, Gasparini demonstrated that it was in fact a metriorhynchid crocodyliform, and that may be a junior synonym of "Metriorhynchus". It was about long.
Taxonomy and phylogeny.
In the 2000s phylogenetic analysis has shown that "Purranisaurus" is a distinct metriorhynchid genus. A subsequent study expanded the genus "Purranisaurus" to include "Metriorhynchus casamiquelai" and "M. westermanni". Following the re-description of the holotype of the type species, only that species is now referred to "Purranisaurus". 
References.
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