Sorbeoconcha is a taxonomic clade of snails, i.e. gastropods, mainly marine species with gills and opercula, within the clade Caenogastropoda.
Caspia is a genus of marine snails, brackish water snails and freshwater snails with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. Caspia is the type genus of the Caspiidae, that is a synonym of Pyrgulinae.
Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum. Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species.
Cerithiidae, common name the cerithiids or ceriths, is a large family of medium-sized marine gastropods in the clade Sorbeoconcha.
Helcionelloida is an extinct group of ancient molluscs. These are the oldest known conchiferan molluscs, that is, they had a mineralised shell. Some members of this class were mistaken for Monoplacophorans. The class was erected by Peel in 1991.
Apogastropoda was previously used as a major taxonomic grouping of sea snails, marine gastropod molluscs. This infraclass mostly consisted of marine limpets and operculate snails. At least 20,000 species were considered to exist within the two clades that were included, Heterobranchia and Caenogastropoda.
Crosseola is a genus of minute sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.
The Cingulopsoidea is a superfamily of sea snails, marine gastropod molluscs in the clade Littorinimorpha.
Parafossarulus is a genus of freshwater snails with gills and an operculum, an aquatic prosobranch gastropod mollusks in the family Bithyniidae.
The Skeneidae are a speciose family of minute to small marine gastropod molluscs in the superfamily Trochoidea.
Turricaspia is a genus of aquatic snails which includes marine snails, brackish water snails and freshwater snails which all have a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae. Turricaspia is the type genus of the Turricaspiinae, which is a synonym of Pyrgulinae.
Conradia is a genus of very small sea snails or micromolluscs, marine gastropod molluscs in the family Conradiidae.
Crossea is a genus of very small sea snails or micromolluscs, marine gastropod molluscs in the family Conradiidae.
Crosseola bellula is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.
Crosseola cancellata is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.
Crosseola inverta is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.
Crosseola striata is a species of small sea snail or micromollusc, a marine gastropod mollusc in the family Conradiidae.
Truncatelloidea is a superfamily of snails, gastropod mollusks in the clade Caenogastropoda.
Crossolida is a genus of very small sea snails or micromolluscs, marine gastropod molluscs in the family Conradiidae.
