living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Chelicerata Heymons, 1901
             Class Arachnida Lamarck, 1801
               Subclass Acari Leach, 1817 - mites and ticks
                 Order Acariformes Zakhvatkin, 1952 see Superorder Acariformes Zakhvatkin, 1952
                   Suborder Oribatida van der Hammen, 1968 - oribatid mites
                     Cohort Palaeosomata Grandjean, 1969 see Infraorder Palaeosomata Grandjean, 1969
                       1 Family Acaronychidae Grandjean, 1932
                       2 Family Archeonothridae Grandjean, 1954 see Family Acaronychidae Grandjean, 1932
                       3 Family Palaeacaridae Grandjean, 1932
                       4 Family Ctenacaridae Grandjean, 1954
                       5 Family Adelphacaridae Grandjean, 1954
                       6 Family Aphelacaridae Grandjean, 1954 see Family Adelphacaridae Grandjean, 1954