Heterobranchia, the heterobranchs, is a taxonomic clade of snails and slugs, which includes marine, aquatic and terrestrial gastropod mollusks.
Valvatidae, the valve snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks.
Lepetelloidea is a superfamily of sea snails, small deepwater limpets, marine gastropod mollusks in the clade Vetigastropoda.
Rastodentidae is a taxonomic family of minute sea snails, marine gastropod molluscs in the clade Littorinimorpha.
Pseudococculinidae is a family of small sea snails or false limpets, marine gastropod mollusks in the superfamily Lepetelloidea.
Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea.
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.
Bohaispiridae is an extinct family of sea snails, marine gastropod molluscs in the clade Littorinimorpha.
The Skeneopsidae are a family of very small sea snails, marine gastropod molluscs in the clade Littorinimorpha.
The Zerotulidae comprise a taxonomic family of sea snails, marine gastropod molluscs in the superfamily Littorinoidea.
Elachisinidae is a family of sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the order Littorinimorpha.
The Hyalogyrinidae is a taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.
The Xylodisculidae is a taxonomic family of sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.
The Drilliidae are a taxonomic family of small predatory sea snails with high-spired shells. They are classified as marine gastropod mollusks in the superfamily Conoidea.
Amphiplica is a genus of sea snails, marine gastropod mollusks in the family Caymanabyssiidae.
Caymanabyssia is a genus of small sea snails, marine gastropod mollusks in the family Caymanabyssiidae, the false limpets.
Colotrachelus is a genus of small sea snails, marine gastropod mollusks in the family Caymanabyssiidae, the false limpets.
Caymanabyssia rhina is a species of small sea snail, a marine gastropod mollusk in the family Caymanabyssiidae, the false limpets. The species has been verified to possess more defined threads and spine spacing on the teleoconch than other species of the genus.
Caymanabyssia sinespina is a species of small sea snail, a marine gastropod mollusk in the family Caymanabyssiidae, the false limpets.
Cocculinida is an order of deepwater limpets, in the subclass Neomphaliones.
