Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Asc-helminthes
           Class Acanthocephala Rudolphi, 1802
             1 Order Eoacanthocephala Van Cleave, 1936
             2 Order Palaeoacanthocephala
             3 Order Archiacanthocephala Meyer, 1931 see Class Archiacanthocephala (A. Meyer, 1931)