Class
Agnatha incertae sedis
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Superclass | Agnatha |
| Class | incertae sedis |
| Cephalaspidomorphi | |
| Pteraspidomorphi | |
| Genus | Tylodus |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Superclass | Agnatha |
| Class | incertae sedis |
| Cephalaspidomorphi | |
| Pteraspidomorphi | |
| Genus | Tylodus |