Phylum Schizoramia Bergström, 1976a see Phylum Arthropoda Siebold, 1848
   Superclass †Proschizoramia Hou & Bergström, 1997
     Class †Paracrustacea Hou & Bergström, 1997
       Order †Canadaspidida Novozhilov, 1960 see Order Hymenocarina Clarke, 1882
         Family †Canadaspididae Novozhilov, 1960
           Genus †Canadaspis Novozhilov, in Orlov, 1960
             †Canadaspis laevigata (Hou & Bergström, 1991)