Hypsogastropoda is a clade containing marine gastropods within the clade Caenogastropoda.
Haustrinae is a taxonomic subfamily of predatory sea snails, marine gastropod mollusks in the family Muricidae, the murex shells or rock shells.
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum.
Candidula is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, . the hairy snails and their allies.
Melanopsidae, common name melanopsids, is a family of freshwater gastropods in the clade Sorbeoconcha. Species in this family are native to southern and eastern Europe, northern Africa, parts of the Middle East, New Zealand, and freshwater streams of some large South Pacific islands.
Turritellidae, common name the "tower shells" or "tower snails", is a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Sorbeoconcha.
Backeljaia gigaxii is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusc in the family Geomitridae.
The Euctenidiacea, common name dorid nudibranchs, are a taxonomic suborder of sea snails or slugs, marine gastropod molluscs in the order Nudibranchia. Bouchet & Rocroi (2005) rejected the name Anthobranchia on the grounds that it also included Onchidium at the time of original publication. Doridina is equivalent and used in the latest classification.
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.
Trophoninae is a subfamily of predatory sea snails, marine gastropod mollusks in the family Muricidae, the rock snails and their allies.
Typhinae is a subfamily in the family Muricidae.
Tripterotyphinae is a subfamily in the family Muricidae.
Cardioidea is a taxonomic superfamily of saltwater clams, marine bivalve molluscs consisting of the extant Cardiidae (cockles) and the extinct Pterocardiidae.
Backeljaia camporroblensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Geomitridae.
After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily：
Trochida is an order of small to very large vetigastropod, Recent and extinct sea snails with gills and an operculum.
Babylonia spirata, common name the Spiral Babylon, is a species of sea snail, a marine gastropod mollusk, in the family Babyloniidae. It is the type species of the genus Babylonia.
Geomitridae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Backeljaia is a genus of small to medium-sized, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies.
Warenia is a genus of sea snails in the family Muricidae, the murex snails or rock snails. There is one species in the genus: Warenia elegantula. This marine species occurs of the Aleutian Islands.
