Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval. - ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997 [Lake, Halanych, Servin & Garey 2020]
   Panarthropoda Nielsen, 1995 - panarthropods
     Arthropoda Siebold, 1848 - arthropods see Phylum Arthropoda Siebold, 1848
       Mandibulata see Subphylum Mandibulata Snodgrass, 1938
         "Crustacea" Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960
           Malacostraca Latreille 1802 see Class Malacostraca Latreille, 1802
             phyllocarids see Subclass Phyllocarida Packard, 1879
               1 Genus †Caryocaris Salter, 1863