Family
Phialaspididae White, 1946
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Superclass | Agnatha |
| Class | Pteraspidomorphi |
| Subclass | Heterostraci |
| Order | Phialaspidiformes |
| Family | Phialaspididae |
| Genus | Phialaspis |
| Family | Traquairaspididae |
| Weigeltaspididae |