sigmurethra

>> GASTROPODA

- Sigmurethra: informal group, possibly to be subsumed under other groups (except for Arionidea & Helicoidea not possibly belonging to Limacoids)

-/- 11 superfamilies

-/- Arionoidea (suprafamilia; no subgroup of klados Limacoids)

-/- Helicoidea (suprafamilia; no subgroup of klados Limacoids): Schnirkelschnecken

-/-.- Helicidae (familia): Echte Schnirkelschnecken