living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: 4k;54p;156c;911o;7123f;17,575g;4762s;36ss;8v;19; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Count: [c] 2k;51p;154c;900o;7001f;17,209g;4300s;33ss;8v; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
     Kingdom Animalia Linnaeus, 1758 - animals
    Count: [c] 38p;101c;595o;5766f;13,419g;3233s;32ss;3v; ‡1f;6g;7s;1ss; †1c;9o;10f;16g;1s
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Count: [c] 29p;70c;458o;5094f;11,476g;2933s;31ss;3v; ‡1f;6g;7s;1ss; †1c;8o;10f;11g;1s
         Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
        Count: [f] 3c;31o;380f;645g;183s
           Class Trematoda Rudolphi, 1808 - flukes see Infraclass Trematoda Rudolphi, 1808
          Count: 5o;205f;304g;80s
             Subclass Monogenea Carus, 1863 see Infraclass Monogenea
            Count: [f] 45f;70g;19s
               Suborder Polyopisthocotylea Odhner, 1912 see Subclass Polyopisthocotylea
              Count: [f] 30f;43g;13s
                 Superfamily Diclidophoroidea Fuhrmann, 1928
                Count: 11f;20g;4s
                   01 Family Diclidophoridae Fuhrmann, 1928
                  Count: 1g;1s
                   02 Family Mazocraeidae Price, 1936
                  Count: -
                   03 Family Pterinotrematidae Bychowsky & Nagibina, 1959
                  Count: [g] 1g
                   04 Family Discocotylidae Price, 1936
                  Count: -
                   05 Family Plectanocotylidae Monticelli, 1903
                  Count: [g] 2g
                   06 Family Dactylocotylidae
                  Count: [g] 2g;1s
                   07 Family Protomicrocotylidae Johnston & Tiegs, 1922
                  Count: [g] 4g
                   08 Family Octolabeidae Yamaguti, 1963
                  Count: [*] 1g;1s
                   09 Family Macrovalvitrematidae Yamaguti, 1963
                  Count: [g] 5g;1s
                   10 Family Hexostomatidae Price, 1936
                  Count: [g] 2g
                   11 Family Pseudodiclidophoridae Yamaguti, 1965
                  Count: [g] 2g