Gastropod families

Plakobranchidae is a family of sea slugs, marine opisthobranch gastropod mollusks in the superfamily Plakobranchoidea. They superficially resemble nudibranchs but they are sacoglossans, members of the clade Sacoglossa within the Opisthobranchia.

The Glacidorbidae is a taxonomic family of freshwater snails.

Cyclophoridae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusks in the order Architaenioglossa belonging to the subclass Caenogastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Barleeiidae (often also spelled Barleeidae) is a family of small sea snails, micromollusks in the clade Littorinimorpha.

Acavidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Rhytidoidea.

Charopidae is a taxonomic family of small air-breathing land snails (and semi-slugs such as Otoconcha dimidiata), terrestrial pulmonate gastropod mollusks in the superfamily Punctoidea.

Limapontiidae is a taxonomic family of small to minute sacoglossan sea slugs. These are marine opisthobranch gastropod mollusks.

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.

thumb|A live individual of Pseudomelatoma torosa [[in situ with an attached individual of Crepidula adunca on top.]]

Cerithiopsidae is a family of very small sea snails in the informal group Ptenoglossa. Members of this family are known as cerithiopsids.

Eubranchidae is a family of nudibranchs, shell-less marine gastropod molluscs or sea slugs, within the superfamily Fionoidea. They are the only known fionoid family with a triserial radula, this is, its central teeth are flanked by one longitudinal row of lateral teeth on each side.

Cocculinidae is a family of sea snails, deep-sea limpets, marine gastropod mollusks in the superfamily Cocculinoidea.

Valvatidae, the valve snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks.

thumb|A live individual of Meghimatium fruhstorferi in the wild

Ariophantidae is a taxonomic family of air-breathing land snails and semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Potamididae, common name potamidids (also known as horn snails or mudwhelks) are a family of small to large brackish water snails that live on mud flats, mangroves and similar habitats. They are amphibious gastropod molluscs in the superfamily Cerithioidea.

Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.

Tegulidae is a family of small to large sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Costellariidae sometimes called the "ribbed miters" is a taxonomic family of minute to medium-sized predatory sea snails, marine gastropod mollusks. This family of snails is also sometimes referred to as Vexillum miters. The main family of miter shells however is Mitridae, a closely related group.

Juliidae, common name the bivalved gastropods, is a family of small sea snails, marine gastropod mollusks or micromollusks in the superfamily Oxynooidea, an opisthobranch group.

Cadlinidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea.

Neritopsidae is a family of small sea snails and freshwater snails in the clade Cycloneritimorpha (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Litiopidae, common name litiopids, is a family of small sea snails, marine gastropod molluscs in the clade Sorbeoconcha.

Cerastidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the order Stylommatophora.

Volvatellidae is a taxonomic family of sea snails, marine gastropod molluscs in the superfamily Oxynooidea.

Iravadiidae is a family of small sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the clade Littorinimorpha.

Haloceratidae is a family of sea snails, marine gastropod molluscs in the superfamily Capuloidea.

Janolidae is a family of sea slugs, nudibranchs, marine gastropod molluscs, in the clade Euthyneura.

Helicodiscidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Punctoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Umbraculidae are a taxonomic family of unusual sea snails or limpets, marine opisthobranch gastropod molluscs in the clade Umbraculida.

Babyloniidae is a taxonomic family of predatory sea snails, marine gastropod mollusks unassigned within the superfamily Neogastropoda.

Endodontidae is a taxonomic family of very small air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs in the superfamily Punctoidea.

Haplotrematidae is a taxonomic family of predatory air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Haplotrematoidea.

Pleurodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.

The Skeneidae are a speciose family of minute to small marine gastropod molluscs in the superfamily Trochoidea.

Eatoniellidae, commonly known as eatoniellids, are a taxonomic family of minute sea snails, marine gastropod molluscs in the superfamily Cingulopsoidea.

Phenacolepadidae is a family of small sea snails or false limpets, marine gastropod mollusks in the clade Cycloneritimorpha (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Creseidae is a family of gastropods belonging to the order Pteropoda.

Cystiscidae is a taxonomic family of small sea snails, marine gastropod mollusks or micromollusks.

Pseudolividae is a taxonomic family of medium-sized sea snails, marine gastropod mollusks in the superfamily Olivoidea.

Elachisinidae is a family of sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the order Littorinimorpha.

Lithoglyphidae is a family of small freshwater snails with gills and an operculum, aquatic gastropod mollusks.

Gastrodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Solariellidae is a family of small sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

The Zerotulidae comprise a taxonomic family of sea snails, marine gastropod molluscs in the superfamily Littorinoidea.

Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.

Trigonochlamydidae is a family of air-breathing land slugs, terrestrial gastropod molluscs in the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Colloniidae is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the clade Vetigastropoda.

Thysanophoridae is a family of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Helicoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Addisoniidae is a family of sea snails, deepwater true limpets, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Lepetellidae is a taxonomic family of small deepwater sea snails or limpets, marine gastropod molluscs in the superfamily Lepetelloidea in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). (It was in the order Cocculiniformia before).

Oleacinidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Pristilomatidae is a taxonomic family of air-breathing land snails, terrestrial gastropod molluscs in the superfamily Gastrodontoidea.

Rastodentidae is a taxonomic family of minute sea snails, marine gastropod molluscs in the clade Littorinimorpha.

Chilodontaidae is a taxonomic family of mostly small deepwater sea snails, marine gastropod molluscs in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Cochlespiridae is a taxonomic family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

Cuthonidae is a family of nudibranchs, shell-less marine gastropod molluscs or sea slugs, within the superfamily Fionoidea.

Bathydorididae is a taxonomic family of dorid nudibranch, shell-less marine gastropod mollusks. Bathydorididae is the only family in the superfamily Bathydoridoidea, within the infraorder Bathydoridoidei.

Stenothyridae is a family of small freshwater snails, snails with gills and an operculum, aquatic gastropod molluscs in the superfamily Truncatelloidea.