organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: -
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
  Count: -
     Kingdom Animalia Linnaeus, 1758 - animals
    Count: -
       Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
      Count: -
         Phylum Arthropoda Siebold, 1848 - arthropods
        Count: -
           01 Class Pycnogonida Latreille, 1810 - pycnogonids
          Count: -
           02 Class †Trilobita Walch, 1771 - trilobites
          Count: -
           03 Class Merostomata Dana, 1852 - horseshoe crabs see Class Xiphosura Latreille, 1802
          Count: -
           04 Class Arachnida Lamarck, 1801
          Count: -
           05 Class Remipedia Yager, 1981 - remipedes
          Count: -
           06 Class Ostracoda Latreille, 1802 - ostracods
          Count: -
           07 Class Cephalocarida H.L. Sanders, 1955 - cephalocarids
          Count: -
           08 Class Branchiopoda Latreille, 1817 - branchiopods
          Count: -
           09 Class Maxillopoda Dahl, 1956 see Subphylum Pancrustacea Zrzavý et al., 1997
          Count: -
           10 Class Cirripedia (Rafinesque, 1816) see Infraclass Cirripedia Burmeister, 1834
          Count: -
           11 Class Malacostraca Latreille, 1802
          Count: -
           12 Class Chilopoda Latreille, 1817 - centipedes
          Count: -
           13 Class Diplopoda Blainville, 1844 - millipedes
          Count: -
           14 Class Pauropoda Lubbock, 1868 - pauropodans
          Count: -
           15 Class Symphyla Ryder, 1880 - symphylans
          Count: -
           16 Class Insecta Linnaeus, 1758 - insects
          Count: -