All the species of snails in the family of door snails are left-handed, which is an uncommon feature in gastropods in general.

Truncatophaedusa is a monotypic land snail genus belonging to the family Clausiliidae, the door snails, all of which have a clausilium.

Euxinastra is a genus of air-breathing land snail with a clausilium, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails.

Leptacme cuongi is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Clausiliidae, the door snails.

Temesa is a genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropods in the family Clausiliidae, the door snails.

Almost all the species of snails in the family of door snails are left-handed, which is an uncommon feature in gastropod shells in general.

Macrogastra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Clausiliidae, the door snails.

This genus of slugs should not be confused with a genus of door snails that has a similar name: Boettgeria.

Pontophaedusa funiculum is a species of land snail, a gastropod in the family Clausiliidae, the door snails within the subfamily Serrulininae.

All door snails have a clausilium with which they can close the shell aperture.