Superphylum deuterostomes Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Xenambulacraria Bourlat, Juliusdottir, Lowe, Freeman, Aronowicz, Kirschner, Lander, Thorndyke, Nakano, Kohn, Heyland, Moroz, Copley & Telford, 2006
     1 Phylum Xenoturbellida Westblad, 1949 see Subphylum Xenoturbellida Westblad, 1949
     2 Ambulacraria Metschnikoff 1881 [Halanych 1995]