| Leptoxis crassa | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Family: | Pleuroceridae |
| Genus: | Athearnia |
| Species: | †A. crassa |
| Binomial name | |
| †Athearnia crassa (Haldeman, 1841) | |
| Synonyms | |
Leptoxis crassa | |
Athearnia crassa, the boulder snail, was a species of freshwater snail in the family Pleuroceridae. It was[ when? ] native to the United States, where it was known from Alabama, Georgia, Tennessee, and Virginia. It is now extinct. [1]
