| 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 | Heterodonta Neumayr, 1883 |
| infraclass | Euheterodonta Giribet & Distel, 2003 |
| superorder | Imparidentia Bieler, P. M. Mikkelsen & Giribet, 2014 |
| order | Lucinida Gray, 1854 |
| superfamily | Thyasiroidea Dall, 1900 |
| family | Thyasiridae Dall, 1900 |
| genus | Leptaxinus A. E. Verrill & Bush, 1898 |