Genus
Jiuchengia Wang et Wang, 1983
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Organism group | Gnathostomata |
| Class | Placodermi |
| Order | Euarthrodira |
| Suborder | Coccosteina |
| Superfamily | Coccosteoidea |
| Family | Coccosteidae |
| Genus | Coccosteus |
| Dickosteus | |
| Janiosteus | |
| Jiuchengia | |
| Species | longoccipita |
| Genus | Livosteus |
| Millerosteus | |
| Protitanichthys | |
| Watsonosteus |