life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
       Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
         Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
           Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
             Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929
               Platyzoa Ax, 1987 see [unranked] Spiralia Schleip, 1929
                 1 Phylum Gastrotricha Metschnikoff, 1864 - gastrotrichs
                 2 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
                 3 Gnathifera Ahlrichs, 1995