Oxychilidae

Oxychilidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea.

Distribution
The distribution of Oxychilidae includes the Nearctic, western-Palearctic, eastern-Palearctic, Neotropical, Ethiopia and Hawaii.

Taxonomy
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, 1989
 * Subfamily Daudebardiinae Kobelt, 1906
 * Subfamily Godwiniinae Cooke, 1921
 * Subfamily Nastiinae A. Riedel, 1989

Genera
Genera within the Oxychilidae include:

subfamily Oxychilinae subfamily Daudebardiinae subfamily Nastiinae
 * Allogenes Gude, 1911
 * Araboxychilus A. Riedel, 1977
 * Cellariopsis A.J.Wagner, 1914
 * Conulopolita O. Boettger, 1879
 * Discoxychilus A. Riedel, 1966
 * Eopolita Pollonera, 1916
 * Gastranodon O. Boettger, 1889
 * Iranoxychilus A. Riedel, 1998
 * Mediterranea Clessin, 1880 - sometimes as a subgenus of Oxychilus
 * Morlina A. J. Wagner 1914 - sometimes as a subgenus of Oxychilus
 * Oxychilus Fitzinger, 1833
 * subgenus Oxychilus Fitzinger 1833
 * subgenus Riedelius Hudec 1961
 * Pseudopolita Germain, 1908
 * Vitrinoxychilus A. Riedel, 1963
 * Carpathica A. J. Wagner, 1895
 * Daudebardia Hartmann, 1821 - type genus of the subfamily Daudebardiinae
 * Nastia Riedel, 1989
 * Schistophallus A. J. Wagner, 1914

Cladogram
The following cladogram shows the phylogenic relationships of this family to the other families within the limacoid clade: