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Platyhystrix
Temporal range: Late Gzhelian – Early Permian
Platy
Artistic impression of a Platyhystrix rugosus
Scientific classification
Domain: Eukaryote
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Temnospondyli
Family: Dissorophidae
Genus: Platyhystrix
Williston, 1911
Binomial name
Platyhystrix rugosus
Case, 1910

Platyhystrix was an amphibian from Carboniferous Texas. Like Dimetrodon and Edaphosaurus, it also had a sail. But unlike these two, this sail appeared convergently and is not a synapsid. Many of the animals from Texas and Arizona during the Early Permian Period evolved sails to control their heat due to seasonal climate.

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