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Title: Purranisaurus  
Author: World Heritage Encyclopedia
Language: English
Subject: List of marine reptiles, List of crurotarsan genera, Metriorhynchus, Metriorhynchidae
Publisher: World Heritage Encyclopedia


Temporal range: 167–150Ma
Callovian - Tithonian
Purranisaurus casamiquelai
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
(unranked): Mesoeucrocodylia
Suborder: Thalattosuchia
Family: Metriorhynchidae
Genus: Purranisaurus
Rusconi, 1948 [1]
  • P. casamiquelai Gasparini & Chong, 1977 [2]
  • P. westermanni Gasparini, 1980 [3]
  • P. potens Rusconi, 1948 (type)

Purranisaurus is an extinct genus of marine crocodyliform from the Middle to Late Jurassic period of Chile and Argentina. Rusconi originally regarded Purranisaurus potens (the type species) to be a plesiosaur;[1] however, Gasparini demonstrated that it was in fact a metriorhynchid crocodyliform, and that may be a junior synonym of Metriorhynchus.[4]

Taxonomy and phylogeny

Recent phylogenetic analysis has shown that Purranisaurus is a distinct metriorhynchid genus.[5][6] A subsequent study expanded the genus Purranisaurus to include Metriorhynchus casamiquelai and M. westermanni.[7]

Valid species

  • P. casamiquelai: Middle Jurassic of Chile (Callovian);[2]
  • P. westermanni: Middle Jurassic of Chile (Callovian). Although previously considered a junior synonym of P. casamiquelai,[8] it has been revalidated;[9]
  • P. potens: End Jurassic of Argentina (Tithonian).


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