| Ponderous siltsnail | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Caenogastropoda clade Hypsogastropoda |
| Superfamily: | Rissooidea |
| Family: | Hydrobiidae |
| Genus: | Cincinnatia |
| Species: | C. ponderosa |
| Binomial name | |
| Cincinnatia ponderosa F.G. Thompson, 1968 |
|
The ponderous siltsnail or ponderous spring snail (Cincinnatia ponderosa) is a species of gastropod in the Hydrobiidae family. It is endemic to the United States.