Heterobranchia, the heterobranchs, is a taxonomic clade of snails and slugs, which includes marine, aquatic and terrestrial gastropod mollusks.
Helicinidae is a family of small tropical land snails which have an operculum. They are terrestrial operculate gastropod mollusks in the superfamily Helicinoidea.
Helicigona lapicida is a species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails.
The Systellommatophora is a clade of primitive, air-breathing slugs, according to the taxonomy of the Gastropoda.
Valvatidae, the valve snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks.
Kaliella is a genus of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the family Chronidae.
Streptaxidae is a family of carnivorous air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora. Six Streptaxidae subfamilies are accepted in the 2005 taxonomy of the Gastropoda by Bouchet & Rocroi.
Euconulidae is a taxonomic family of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the superfamily Trochomorphoidea.
Cochlicopa lubricella is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Cochlicopidae.
Cylichnidae, common name the "chalice bubble snails" or "canoe bubble snails" is a family of sea snails or bubble snails, marine gastropod mollusks in the superfamily Cylichnoidea.
Cerastidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the order Stylommatophora.
Columella aspera is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Truncatellinidae, the vertigo snails and allies.
Euconulus is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Euconulidae, the hive snails.
The Testacelloidea are a superfamily of air-breathing land snails and slugs, terrestrial gastropod mollusks in the suborder Helicina of the order Stylommatophora.
Lottioidea is a superfamily of sea snails or limpets, marine gastropod mollusks in the clade Patellogastropoda, the true limpets.
Valvatoidea is a superfamily of minute freshwater and marine snails, aquatic gastropod mollusks in the informal group Lower Heterobranchia.
Hygrophila is a taxonomic superorder of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks within the clade Panpulmonata.
Euspira nitida is a species of sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.
