Chthonosaurus
| Chthonosaurus Temporal range: Late Permian ~ | |
|---|---|
| Life restoration of Chthonosaurus velocidens | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | †Therocephalia |
| Clade: | †Eutherocephalia |
| Genus: | †Chthonosaurus Vjuschkov 1955 |
| Type species | |
| †Chthonosaurus velocidens Vjuschkov 1955 | |
Chthonosaurus is an extinct genus of eutherocephalian therapsids from the Late Permian Kutulukskaya Formation of Russia. The type species Chthonosaurus velocidens was named in 1955.