Family
Mactromyidae Cox, 1929
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Bivalvia |
| Subclass | Heterodonta |
| Order | Veneroida |
| Lucinoidea | |
| Superfamily | Lucinidae |
| Family | Mactromyidae |
| Genus | Unicardium |
See also
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Bivalvia |
| Subclass | Heterodonta |
| Order | Veneroida |
| Lucinoidea | |
| Superfamily | Lucinidae |
| Family | Mactromyidae |
| Genus | Unicardium |