-
-
Eumetazoa (metazoans)
-
Bilateria (bilaterally symmetrical animals)
-
Protostomia (protostomes)
-
-
-
Mollusca (clams, snails, squids, and relatives)
-
Class Gastropoda
-
Order Gymnosomata
-
Family Clionidae
-
Family Cliopsidae
-
Family Hydromylidae
-
Family Notobranchaeidae
-
Family Pneumodermatidae
-
Family Thliptodontidae
-
-
-
-
-
-
-
-
-