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.
Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.
Discus is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Discidae, the disk snails.
Alpiniropa is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Charopidae. Alpiniropa is a monotypic genus, meaning it contains only one species. Its sole species, Alpiniropa okeana, is endemic to Australia.
Aphaostracon is a genus of very small or minute freshwater snails in the family Cochliopidae that have an operculum.
Ctenophila is a genus of small air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Helicarionidae.
Edentulina is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Streptaxidae.
Erepta is a genus of air-breathing land snails, a terrestrial pulmonate gastropod mollusks in the family Helicarionidae.
Hungerfordia is a genus of small land snails with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae endemic to the Republic of Palau. Many of the members of this genus inhabit limestone cliffs or rubble, especially in the Rock Islands (Chelbacheb) in Airai, Koror, and Peleliu states. As of 2022, there are 41 described species in this genus. A series of revisions in 2013 - 2015 described several new species, as well as transferring Palauan members of the genus Diplommatina or Palaina into Hungerfordia.
Leptoxis is a genus of freshwater snails with a gill and an operculum, aquatic gastropod molluscs in the family Pleuroceridae.
Stagnicola is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Lymnaeidae, the pond snails.
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. Land snail is the common name for terrestrial gastropod mollusks that have shells. However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water.
Euconulidae is a taxonomic family of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the superfamily Trochomorphoidea.
Omphiscola is a genus of small to medium-sized, air-breathing, freshwater snails, aquatic pulmonate gastropod mollusks in the family Lymnaeidae.
Lyria sabaensis is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes.
Vermetus is a genus of sea snails, marine gastropod mollusks in the family Vermetidae, the worm snails or worm shells.
Plicadomus is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Streptaxidae.
Antidrymaeus laticinctus is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.
Antidrymaeus dormani, also known as the manatee treesnail, is a species of terrestrial snail in the family Bulimulidae.
Ambleminae is a subfamily of freshwater mussel in the family Unionidae. They are found throughout much of eastern North America south to Central America, although fossils are also known from Siberia. Some species have also been introduced to East Asia. They are the most speciose radiation of the Unionidae, with more than 300 species.
