Littorinimorpha

Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine species), but also including some freshwater snails (limnic species) and land snails (terrestrial species).

Atlantidae is a family of sea snails, holoplanktonic gastropod molluscs in the clade Littorinimorpha.

Hipponicidae, common name hoof shells or hoof snails, is a family of small sea snails, limpet-like marine gastropod molluscs in the superfamily Hipponicoidea.

Cypraeoidea, the cowries and cowry allies, is a superfamily of sea snails, marine gastropods included in the order Littorinimorpha. This superfamily had been called Cypraeacea and was named by Rafinesque in 1815.

Pterotracheidae is a family of medium-sized to large floating sea snails, pelagic gastropod molluscs. They are in the superfamily Pterotracheoidea along with two other similar pelagic families, the Atlantidae and the Carinariidae.

Rissooidea (originally named Rissoacea by Gray in 1847) is a superfamily of tiny marine snails.

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

The Stromboidea, originally named the Strombacea by Rafinesque in 1815, is a superfamily of medium-sized to very large sea snails in the order Littorinimorpha.

Littorinoidea are a superfamily of both sea snails and land snails which have a gill and an operculum, terrestrial and marine gastropod mollusks in the order Littorinimorpha.

The Pterotracheoidea is, according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), a taxonomic superfamily of sea snails or sea slugs, marine gastropod molluscs in the order Littorinimorpha. They are commonly called heteropods or sea elephants.

Velutinoidea is a superfamily of sea snails, marine gastropod molluscs in the order Littorinimorpha.

The Cingulopsoidea is a superfamily of sea snails, marine gastropod molluscs in the clade Littorinimorpha.

Lironobidae is a family of gastropods belonging to the order Littorinimorpha.

Xenophoroidea is a superfamily of sea snails, marine gastropod molluscs in the clade Littorinimorpha.

The Vermetoidea, the worm snails or worm shells, are a taxonomic superfamily of small to medium-sized sea snails, marine gastropod molluscs in the order Littorinimorpha.