Stylommatophora is an order of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. Stylommatophorans lack an operculum, but some close their shell apertures with temporary "operculum" (epiphragm) made of calcified mucus. They have two pairs of retractile tentacles, the upper pair of which bears eyes on the tentacle tips. All stylommatophorans are hermaphrodites.
Vertiginidae, common name the whorl snails, is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the superfamily Pupilloidea.
Ptychalaea is a fossil genus of very small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Gastrocoptidae.
Enidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks.
Vertigo antivertigo is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
Carychium is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Ellobiidae.
Orthurethra is a clade of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.
Vertigo parcedentata is a species of minute, air-breathing land snail, terrestrial pulmonate gastropod molluscs or micromollusks in the family Vertiginidae, the whorl snails.
Pupilloidea is a superfamily of small and very small air-breathing land snails, terrestrial gastropod mollusks in the infraorder Pupilloidei.
Hypselostoma is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Vertiginidae, the whorl snails.
Sinoennea is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Diapheridae.
Angustopila is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hypselostomatinae of the family Hypselostomatidae.
Balticopta is a fossil genus of minute air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Gastrocoptidae from Eocene Baltic amber. It includes one species, B. gusakovi.
Clostophis is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hypselostomatinae of the family Gastrocoptidae.
Angustopila psammion is a species of land snail belonging to the subfamily Hypselostomatinae of the family Gastrocoptidae. It was described in 2022.
Tonkinospira is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Hypselostomatinae of the family Gastrocoptidae.
