Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum; they are in the order Littorinimorpha.
Punctoidea is a superfamily of air-breathing land snails and slugs, terrestrial pulmonate gastropod mollusks in the informal group Sigmurethra.
Carychiinae is a taxonomic subfamily of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks.
Epitonium is a genus of small predatory sea snails, marine gastropod mollusks. Epitonium is the type genus of the family Epitoniidae, the wentletraps.
Pomatias is a genus of small operculate land snails, terrestrial gastropod mollusks in the family Pomatiidae.
Truncatella guerinii is a species of very small land snail that lives at the edge of the sea, a gastropod mollusk in the family Truncatellidae.
Aporrhais is a genus of medium-sized sea snails, marine gastropod mollusks in the family Aporrhaidae and the superfamily Stromboidea.
Truncatella subcylindrica is a species of small land snail that lives at the edge of the sea. It has gills and an operculum and is gastropod mollusk or micromollusk in the family Truncatellidae.
Papillifera papillaris, also known as Papillifera bidens, is a species of small, air-breathing land snail with a clausilium, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails. This is a Mediterranean species.
Cochliopidae is a family of small freshwater snails with gills and an operculum, aquatic gastropod mollusks.
Myosotella is a European genus or subgenus of small, salt marsh snails, terrestrial pulmonate gastropod mollusks in the subfamily Pythiinae of the family Ellobiidae.
Acicula is a genus of very small land snails with an operculum, terrestrial gastropod mollusks in the family Aciculidae.
Cochlodina is a genus of air-breathing land snails in the terrestrial pulmonate gastropod mollusk family Clausiliidae, the door snails.
Bolinus is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Tectarius is a genus of sea snails, marine gastropod mollusks in the family Littorinidae, the winkles or periwinkles.
Onobops is a genus of very small aquatic snails, operculate gastropod mollusks in the family Cochliopidae or in the Hydrobiidae.
Thaumastus is a genus of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Megaspiridae.
Keepingia is a genus of sea snails, marine gastropod mollusks in the subfamily Dorsaninae of the family Nassariidae, the Nassa mud snails or dog whelks.
Vitta is a genus of brackish water and freshwater snails, an aquatic gastropod mollusks in the subfamily Neritininae of the family Neritidae, the nerites.
