The oldest lower Upper Cretaceous plesiosaurs (Reptilia, Sauropterygia) from Southern Patagonia, Argentina

J. P. O'Gorman, and A. N. Varela

2010

Article

Ameghiniana 47(4):447-459

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Taxonomy:

• Polyptychodon patagonicus belongs to Polyptychodon - O'Gorman and Varela (2010)
• Polyptychodon belongs to Plesiosauria - O'Gorman and Varela (2010)