Helicoidea
| Helicoidea | |
|---|---|
 |
|
| Helix pomatia, the Roman snail | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
| Superfamily: |
Helicoidea Rafinesque, 1815 |
Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.
There are 19 families within the superfamily Helicoidea according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.
According to H. Nordsieck the family Xanthonychidae (sensu Hausdorf & Bouchet) is probably polyphyletic (contains several different lineages) and therefore should be divided into several families.
Thompson & Naranjo-García (2012) described a new family Echinichidae and placed it to the superfamily Xanthonychoidea. Therefore, the family Xanthonychidae was moved from Helicoidea to Xanthonychoidea.
Razkin et al. (2015) reorganized classification into monophyletic taxa according to the molecular phylogeny.
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