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| Clionidae | |
|---|---|
| |
| Clione limacina | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Clade: | Euopisthobranchia |
| Superfamily: | Clionoidea |
| Family: | Clionidae Rafinesque, 1815 |
Clionoidae is a family of molluscs known as "sea angels". They are in the subclass Heterobranchia, class Gastropoda. They are small pelagic gastropods.