Hydrodynastes
| Hydrodynastes | |
|---|---|
| Hydrodynastes gigas | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Subfamily: | Dipsadinae |
| Genus: | Hydrodynastes Fitzinger, 1843 |
Hydrodynastes is a small genus of large colubrid snakes in the subfamily Dipsadinae. The genus is endemic to South America.