| Porosteognathus | |
|---|---|
|   | |
| Scientific classification   | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Synapsida | 
| Clade: | Therapsida | 
| Clade: | † Therocephalia | 
| Genus: | † Porosteognathus | 
Porosteognathus is an extinct genus of therocephalian therapsids. Remains have been found at Isheevo in Russia (Republic of Tatarstan). [1] It is known from the Middle Permian. [2]