| Arionidae Temporal range:
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|---|---|
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| A live individual of the Spanish slug Arion vulgaris, in the wild | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Superfamily: | Arionoidea |
| Family: | Arionidae J.E. Gray, 1840[2] |
| Synonyms | |
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Tetraspididae Hagenmüller, 1885 | |
Arionidae, common name the "roundback slugs" or "round back slugs" are a taxonomic family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the superfamily Arionoidea.
- ^ "Family summary for Arionidae". AnimalBase, last change 12-06-2009, accessed 4 August 2010.
- ^ Gray, J.E. (1840). "[Shells of molluscous animals]". Synopsis of the contents of the British Museum (42 ed.). London: British Museum. p. 148.