Phylum Schizoramia Bergström, 1976a see Phylum Arthropoda Siebold, 1848
   Superclass Crustaceomorpha Chernyshev, 1960 see [unranked] Crustaceomorpha Chernyshev, 1960
     Class †Pseudocrustacea Størmer, 1944
       Order †Waptiida Størmer, 1944, nom. corr. see Order Hymenocarina Clarke, 1882
         Family †Waptiidae Walcott, 1912, nom. corr.
           1 Genus †Waptia Walcott, 1912
           2 Genus †Plenocaris Whittington, 1974
           3 ?Genus †Chuandianella Hou & Bergström, 1991