| 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 |
Mollusca Cuvier, 1795 - mollusks
|
| subphylum |
Conchifera Gegenbaur, 1878 - shell-bearers
|
| superclassis |
Cyrtosoma
|
| class |
Cephalopoda Cuvier, 1795 - cephalopods
|
| subclass |
Orthoceratoidea M'Coy, 1844
† |
| order |
Orthocerida Kuhn, 1940
† |
| family |
Orthoceratidae M'Coy, 1844
† |
| subfamily |
Orthoceratinae M'Coy, 1844
† |
| genus |
Orthoceras Bruguière, 1789
† |
| | Orthoceras incertae sedis |
| species |
Orthoceras tantillum Barrande, 1870
† |
