Zenaspis

Zenaspis; Temporal range:
	Fossil of Zenaspis powriei
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Osteostraci
Subclass:	Cornuata
Order:	Zenaspidida
Family:	Zenaspididae
Genus:	Zenaspis; Lankester, 1869
Type species
	Zenaspis salweyi;
Species
	Zenaspis pagei; Zenaspis podolica; Zenaspis powriei; Zenaspis salweyi; Zenaspis waynensis;

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.