| Helicoidea | |
|---|---|
 | |
| Helix pomatia , the Roman snail | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Superorder: | Eupulmonata |
| Order: | Stylommatophora |
| Infraorder: | Helicoidei |
| Superfamily: | Helicoidea Rafinesque, 1815 |
| Famillies | |
See text. | |
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. [1] [2]
According to H. Nordsieck [3] 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. [4] Therefore, the family Xanthonychidae was moved from Helicoidea to Xanthonychoidea.
Razkin et al. (2015) [5] reorganized classification into monophyletic taxa according to the molecular phylogeny. This study is focus on Western Palaearctic species. The Hygromiidae s.l. family was divided into three families, Canariellidae, Geomitridae and Hygromiidae. Moreover, the family Cochlicellidae was including within the Geomitridae family as a tribe (Cochlicellini).
The classification proposed for Western Palaearctic Helicoidea is as follows:
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Pulmonata, or "pulmonates", is an informal group of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families.
Eupulmonata is a taxonomic clade of air-breathing snails. The great majority of this group are land snails and slugs, but some are marine and some are saltmarsh snails that can tolerate salty conditions.
Helicidae is a large, diverse family of small to large, air-breathing land snails, sometimes called the "typical snails."
Hygromiidae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Cochlicella is a genus of small, narrow-shelled, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, previously placed in the Helicidae, Cochlicellidae or Hygromiidae.
Humboldtianidae is an American family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Xanthonychidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Trissexodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Sphincterochilidae is a taxonomic family of medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Pleurodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Epiphragmophorinae is a subfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the amily Xanthonychidae. This family has no subfamilies.
Elonidae is a family of air-breathing land snails, terrestrial pulmonate gastropods mollusks in the superfamily Helicoidea.
Ponentina is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae. the hairy snails and their allies.
Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes the majority of land snails and slugs.
The limacoidei is a taxonomic infraorder of air-breathing land snails, semislugs and slugs, terrestrial pulmonate gastropod molluscs in the suborder Helicina
The Achatinoidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the informal group Sigmurethra.
The Orthalicoidea are a superfamily of air-breathing land snails, terrestrial gastropod mollusks in the infraorder Orthalicoidei of the suborder Helicina
Xanthonychoidea is a taxonomic superfamily of air-breathing land snails, land slugs and semi-slugs, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.
Geomitridae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Canariellidae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.