Zenaspis
| Zenaspis Temporal range:
| |
|---|---|
| |
| Fossil of Zenaspis powriei | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | †Osteostraci |
| Order: | †Zenaspidida |
| Family: | †Zenaspididae |
| Genus: | †Zenaspis Lankester, 1869 |
| Type species | |
| Zenaspis salweyi | |
| Species | |
| |
Zenaspis is an extinct genus of osteostracan jawless fish which existed during the early Devonian period. Due to it being jawless, Zenaspis was probably a bottom feeder. Zenaspis was around 10 inches (25 cm) in length. It had a horseshoe shaped head that probably sheltered a small brain.
