Caenogastropoda [subclass]
(718 species)

Littorinimorpha [order] (256)

Calyptraeoidea [superfamily] (6)

Cingulopsoidea [superfamily] (1)

Cypraeoidea [superfamily] (11)

Ficoidea [superfamily] (2)

Littorinoidea [superfamily] (25)

Naticoidea [superfamily] (16)

Pterotracheoidea [superfamily] (4)

Rissooidea [superfamily] (40)

Stromboidea [superfamily] (5)

Tonnoidea [superfamily] (28)

Truncatelloidea [superfamily] (62)

Vanikoroidea [superfamily] (32)

Velutinoidea [superfamily] (11)

Vermetoidea [superfamily] (10)

Xenophoroidea [superfamily] (3)