Succineidae are a family of small to medium-sized, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Succineoidea.
Bradybaeninae is a taxonomic subfamily of medium-sized to small land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae, superfamily Helicoidea.
Pleurodonte is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Pleurodontinae of the family Pleurodontidae.
Sagdidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks with highest diversity in the Greater Antilles. It has been classified in its own superfamily Sagdoidea and as a member of the superfamily Helicoidea. Some species of Sagdidae are ovoviviparous.
Hygromiidae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Pleurodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Lucerna bainbridgii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pleurodontidae.
Sagdoidea is a superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the infraorder Helicoidei of the suborder Helicina.
Labyrinthus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Labyrinthidae.
Calyptraea, commonly known as the Chinese hat snails is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae, a family which contains the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails.
Granodomus lima is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Sagdidae.
Zachrysia is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Zachrysiidae
Solaropsis, also known by the common name sundial snails or sun snails, is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Solaropsidae.
Labyrinthus chiriquensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Labyrinthidae.
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：
Gonostomopsis is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Pleurodontinae of the family Pleurodontidae.
Isomeria is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Labyrinthidae.
Zachrysiidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Sagdoidea
Solaropsis is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Sagdoidea.
Lucerna is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Pleurodontidae.
