Oxychilidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea.
The distribution of Oxychilidae includes the Nearctic, western-Palearctic, eastern-Palearctic, Neotropical, Ethiopia and Hawaii.
The following three subfamilies were recognized in the taxonomy of Bouchet & Rocroi (2005):
Subfamily Oxychilinae Hesse, 1927 (1879) - synonyms: Helicellinae H. Adams & A. Adams, 1855 (inv.); Hyalininae Clessin, 1876 (inv.); Hyaliniinae Strebel & Pfeffer, 1879; Nastiinae A. Riedel, 1989Subfamily Daudebardiinae Kobelt, 1906Subfamily Godwiniinae Cooke, 1921Genera within the Oxychilidae include:
subfamily Oxychilinae
Oxychilus Fitzinger, 1833subgenus Oxychilus Fitzinger 1833subgenus Ortizius Forcart 1957subgenus Cellariopsis A. J. Wagner 1914subgenus Riedelius Hudec 1961Cellariopsis A.J.Wagner, 1914Eopolita Pollonera, 1916Mediterranea Clessin, 1880 - sometimes as a subgenus of OxychilusMorlina A. J. Wagner 1914 - sometimes as a subgenus of OxychilusNastia Riedel, 1989Schistophallus A. J. Wagner, 1914 - or a subgenus of Oxychilussubfamily Daudebardiinae
Carpathica A. J. Wagner, 1895Daudebardia Hartmann, 1821 - type genus of the subfamily Daudebardiinaesubfamily Godwiniinae
Aegopinella Lindholm, 1927Godwinia Sykes, 1900 - type genus of the subfamily GodwiniinaeNesovitrea C. M. Cooke, 1921Perpolita Baker, 1928The following cladogram shows the phylogenic relationships of this family to the other families within the limacoid clade:
