| Toxolasma | |
|---|---|
| Toxolasma cylindrellus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Unionoida |
| Family: | Unionidae |
| Genus: | Toxolasma |
Toxolasma is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels.