Acochlidiacea
| Acochlidiacea | |
|---|---|
| Acochlidium fijiiensis | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Gastropoda | 
| Subterclass: | Tectipleura | 
| Subcohort: | Panpulmonata | 
| Superorder: | Acochlidiacea Odhner, 1937 | 
| Families | |
| (unranked) Hedylopsacea (unranked) Microhedylacea 
 | |
| Diversity | |
| 46 species | |
| Synonyms | |
| Acochlidiomorpha | |
Acochlidiacea, common name acochlidians, are a taxonomic clade of very unusual sea snails and sea and freshwater slugs, aquatic gastropod mollusks within the large clade Heterobranchia. Acochlidia is a variant spelling.