. "*Heteropoda (Lamarck, 1812)" . . . . "*Carinarioidea (de Blainville, 1818)" . . . "The Pterotracheoidea is, according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), a taxonomic superfamily of sea snails or sea slugs, marine gastropod molluscs in the clade Littorinimorpha. They are commonly called heteropods or sea elephants."@en . . . "Pterotracheoidea"@en .