| Toxolasma | |
|---|---|
|   | |
| Toxolasma cylindrellus | |
|  Scientific classification   | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Bivalvia | 
| Order: | Unionida | 
| Family: | Unionidae | 
| Tribe: | Lampsilini | 
| Genus: |  Toxolasma  Rafinesque, 1831  | 
Toxolasma is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. [1]