[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
           Section Pseudocoelomata
             Phylum Nematoda Gegenbaur, 1859 - round worms
               Class Secernentea Von Linstow, 1905
                 Order Spirurida Railliet, 1914
                   1 Suborder Spirurina Railliet & Henry, 1915
                   2 Suborder Camallanina see Suborder Spirurina Railliet & Henry, 1915
                   3 Suborder Filariina