Caenogastropoda [subclass]
(738 species)

Littorinimorpha [order] (262)

Calyptraeoidea [superfamily] (6)

Cingulopsoidea [superfamily] (1)

Cypraeoidea [superfamily] (12)

Ficoidea [superfamily] (2)

Littorinoidea [superfamily] (24)

Naticoidea [superfamily] (17)

Pterotracheoidea [superfamily] (4)

Rissooidea [superfamily] (40)

Stromboidea [superfamily] (5)

Tonnoidea [superfamily] (30)

Truncatelloidea [superfamily] (62)

Vanikoroidea [superfamily] (34)

Velutinoidea [superfamily] (12)

Vermetoidea [superfamily] (10)

Xenophoroidea [superfamily] (3)