| 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 |
Diasoma
|
| class |
Bivalvia Linnaeus, 1758 - bivalves
|
| subclass |
Pteriomorphia Beurlen, 1944
|
| order |
Cyrtodontida Scarlato & Starobogatov in Nevesskaja et al., 1971
† |
| suborder |
Praecardiidina Newell, 1965
† |
| infraorder |
Praecardioidei Newell, 1965
† |
| superfamily |
Praecardioidea Hoernes, 1884
† |
| family |
Praecardiidae Hoernes, 1884
† |
| genus |
Praecardium Barrande, 1881
† |
| species |
Praecardium primulum Barrande, 1881
† |
