See text Trissexodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

The distribution of Trissexodontidae includes the Iberian Peninsula, northwest Africa,[4] Azores,[5] Canary Islands, Madeira and Cape Verde.

[6] Genera within the family Trissexodontidae include: Shells of species in the family Trissexodontidae are flat and regularly ribbed.

[4] A description of the reproductive system was summarized by Prieto et al.

[4] In this family, the number of haploid chromosomes is known only for the genus Oestophora (n=30).