[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
     Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
       Phylum Arthropoda Siebold, 1848 - arthropods
         Subphylum Chelicerata Heymons, 1901
           Class Pycnogonida Latreille, 1810 - pycnogonids