| Retusidae | |
|---|---|
 | |
| Live Retusa sp. | |
 | |
| A shell of Retusa obtusa | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subterclass: | Tectipleura |
| Order: | Cephalaspidea |
| Superfamily: | Bulloidea |
| Family: | Retusidae Thiele, 1925 |
| Type species | |
| Bulla obtusa Montagu, 1803 | |
Retusidae is a family of very small sea snails, barrel-bubble snails, marine opisthobranch gastropod mollusks. These are headshield slugs, in the superfamily Bulloidea.
