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 | Radiata Linnaeus, 1758 |
| phylum | Cnidaria Hatschek, 1888 - anemones, corals and jellyfish |
| class | Anthozoa Ehrenberg, 1834 |
| subclass | Tabulata Milne-Edwards & Haime, 1850 - tabulate coral † |
| Tabulata incertae sedis | |
| family | Hyostragulidae Galle & Plusquellec, 2002 † |
| genus | Hyostragulum Marek & Galle, 1976 † |