Tylocephalonyx
| Tylocephalonyx Temporal range: Miocene,  | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Order: | Perissodactyla | 
| Family: | †Chalicotheriidae | 
| Subfamily: | †Schizotheriinae | 
| Genus: | †Tylocephalonyx Coombs, 1979 | 
| Species: | †T. skinneri | 
| Binomial name | |
| †Tylocephalonyx skinneri Coombs, 1979 | |
Tylocephalonyx, from Ancient Greek τύλος (túlos), meaning "knob", κέφαλος (képhalos), meaning "head", and ὄνυξ (ónux), meaning "claw/hoof", is an extinct chalicothere from the Miocene of North America.