Trigonochlamydidae
The native distribution of Trigonochlamydidae includes Caucasus, Iran and Turkey. Previously, Trigonochlamydidae was placed in the superfamily Trigonochlamydoidea Hesse, 1882, in the subinfraorder Sigmurethra. This was the only family within that superfamily. The family Trigonochlamydidae is now classified within the limacoid clade, which itself belongs to the clade Stylommatophora, within the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). The following two subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005): There are nine genera in the family Trigonochlamydidae with a total of 11 species:
Subfamily Trigonochlamydinae






Subfamily Parmacellillinae
Synonym: The following cladogram shows the phylogenic relationships of this family with the other families in the limacoid clade:
Taxonomy
Trigonochlamydidae is a family of air-breathing land slugs, terrestrial gastropod molluscs in the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).