| 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 |
Brachiopoda Duméril, 1806 - lamp shells
|
| subphylum |
Linguliformea
|
| class |
Lingulata
|
| order |
Acrotretida Kühn, 1949
† |
| superfamily |
Acrotretoidea Schuchert, 1893
† |
| family |
Biernatidae Holmer, 1989
† |
| genus |
Opsiconidion Ludvigsen, 1974
† |
| species |
Opsiconidion arcticon Ludvigsen, 1974
† |
