Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Urochordata Bateson, 1885 - tunicates
       Class Thaliacea van der Haeven, 1850 - salps
         1 Order Pyrosomida see Order Pyrosomatida Jones, 1848
         2 Order Doliolida Delage & Hérouard, 1898
         3 Order Salpida Forbes, 1853