Purranisaurus casamiquelai

Purranisaurus is an extinct genus of marine crocodyliform from the Middle to Late Jurassic period of Chile and Argentina. The type species P. potens was originally regarded  to be a plesiosaur; and later reinterpreted as a possible synonym of Metriorhynchus. Recent phylogenetic analysis has shown that Purranisaurus is a distinct metriorhynchid genus and expanded to include the Middle Jurassic Chilean species Metriorhynchus casamiquelai and M. westermanni.