Cephalaspis
| Cephalaspis | |
|---|---|
| Digital recreation of Cephalaspis | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Subphylum: | Vertebrata | 
| Infraphylum: | Agnatha | 
| Class: | †Osteostraci | 
| Genus: | †Cephalaspis Agassiz, 1835 | 
| Species: | †C. lyelli | 
| Binomial name | |
| †Cephalaspis lyelli Agassiz, 1835 | |
Cephalaspis (from Greek: κεφαλή kephalḗ, 'head' and Greek: ἀσπίς aspís, 'shield') is a possibly monotypic genus of extinct osteostracan agnathan vertebrate. It was a trout-sized detritivorous fish that lived in the early Devonian.