Zygosaurus
In Depth A relative of amphibians such as Platyhystrix and Cacops, Zygosaurus was a cacopine temnospondyl that lived in Russia during the Permian. Further Reading – Uber die Saurier des kupferfhrenden Zechsteins Russlands. – Bulletin de la Societe National Moscou (in Russian). 21: 136–204. – Eduard Eichwals – 1848.