Taxonomy
Previously, Trigonochlamydidae was placed in the superfamily Trigonochlamydoidea Hesse, 1882, in the subinfraorder Sigmurethra. This was the only family within that superfamily.
The Trigonochlamydidae family 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):
- subfamily Trigonochlamydinae Hesse, 1882 - synonyms: Selenochlamydinae I. M. Likharev & Wiktor, 1980
- subfamily Parmacellillinae Hesse, 1926
Read more about this topic: Trigonochlamydidae