Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum †Trilobitomorpha Størmer, 1944 - trilobites see Superclass Trilobitomorpha Størmer, 1944
       Class †Trilobita Walch, 1771 - trilobites
         Order †Proetida Fortey & Owens, 1975
           1 Family †Proetidae Salter, 1864
           2 Family †Tropidocoryphidae Přibyl, 1946