Order
Nektaspida Raymond, 1920
List of species
1. Liwia plana (Lendzion, 1975) | Lower Cambrian (old nomenclature)
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Chelicerata |
| Crustacea | |
| Trilobita | |
| Class | Insecta |
| Merostomoidea | |
| Infraclass | Phosphatocopina |
| Superorder | Euarthropoda |
| Order | Leperditicopida |
| Nektaspida | |
| Family | Liwiidae |
| Species | Gdowia |