Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Animalia Linnaeus, 1758 - animals |
| subregnum | Eumetazoa Butschli, 1910 |
| divisio | Bilateria Hatschek, 1888 - bilaterians |
| subdivisio | Protostomia Grobben, 1908 - protostomes |
| phylum | Annelida Lamarck, 1809 - annelids |
| class | Polychaeta Grube, 1850 - polychaetes |
| subclass | Sedentaria Lamarck, 1818 |
| order | Spionida |
| suborder | Spioniformia |
| family | Spionidae |
| genus | Pseudopolydora Czerniavsky, 1881 |
| species | Pseudopolydora paucibranchiata (Okuda, 1937) |