Superphylum deuterostomes Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
Count: [p] 4p
   Xenambulacraria Bourlat, Juliusdottir, Lowe, Freeman, Aronowicz, Kirschner, Lander, Thorndyke, Nakano, Kohn, Heyland, Moroz, Copley & Telford, 2006
  Count: [p] 3p;1g;1s
     1 Phylum Xenoturbellida Westblad, 1949 see Subphylum Xenoturbellida Westblad, 1949
    Count: 1g;1s
     2 Ambulacraria Metschnikoff 1881 [Halanych 1995]
    Count: [p] 2p