Littorinimorpha [orde]
(59 soorten in totaal / 30 gevestigd)

Truncatelloidea [superfamilie] (21/12)

Amnicolidae [familie] (1/0)

Assimineidae [familie] (1/1)

Bithyniidae [familie] (3/2)

Caecidae [familie] (1/1)

Cochliopidae [familie] (2/1)

Hydrobiidae [familie] (10/5)

Iravadiidae [familie] (1/0)

Lithoglyphidae [familie] (1/1)

Tornidae [familie] (1/1)