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| Platyhystrix | |
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| 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 it was 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.
