Superfamily Helicoidea Family Solaropsidae Family Camaenidae Family Sphincterochilidae Family Hygromiidae subfamily Trichiinae Family Helicidae subfamily Ariantinae subfamily Helicigoninae subfamily Leptaxinae subfamily Helicinae subfamily Helicodontinae Family Helicellidae Family Bradybaenidae subfamily Bradybaeninae subfamily Helicostylinae Family Helminthoglyptidae Family Oreohelicidae Family Humboldtianidae