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 | Parazoa |
| phylum | Porifera Grant in Todd, 1836 - sponges |
| class | Hexactinellida Schmidt, 1870 |
| subclass | Hexasterophora Schulze, 1886 |
| order | Lyssacinosida Zittel, 1877 |
| family | Rossellidae Schulze, 1885 |
| subfamily | Lanuginellinae Schulze, 1897 |
| genus | Sympagella Schmidt, 1870 |
| species | Sympagella nux Schmidt, 1870 |