| Stereophallodon Temporal range: Permian  | |
|---|---|
|   | |
| Restoration | |
| Scientific classification   | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Synapsida | 
| Family: | † Ophiacodontidae | 
| Genus: | † Stereophallodon Romer, 1937 | 
| Type species | |
| Stereophallodon ciscoensis Romer, 1937 | |
Stereophallodon is an extinct genus of non-mammalian synapsids. [1]