| Marstonia castor | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Caenogastropoda clade Hypsogastropoda |
| Superfamily: | Rissooidea |
| Family: | Hydrobiidae |
| Subfamily: | Nymphophilinae |
| Genus: | Marstonia |
| Species: | M. castor |
| Binomial name | |
| Marstonia castor F. G. Thompson, 1977 |
|
| Synonyms | |
|
Pyrgulopsis castor (F. G. Thompson, 1977) |
|
Marstonia castor, common name the beaver pond marstonia, is a species of very small freshwater snail with a gill and an operculum, an aquatic operculate gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States.