organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Phylum Articulata Cuvier
       Class Vermes Linnaeus, 1758 - worms see Phylum Vermes (C. Linnaeus, 1758)
         1 Class Infusoria see Phylum Ciliophora Doflein, 1901
         2 Class Scolecida Rouse & Fauchald, 1997