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 Cnidaria Hatschek, 1888 - cnidarians
           Class Anthozoa Ehrenberg, 1831
             Subclass Zoantharia de Blainville, 1830
               Order Actiniaria - sea anemones
                 01 Family Acontiophoridae Carlgren, 1938
                 02 Family Actinernidae Stephenson, 1922
                 03 Family Actiniidae Rafinesque, 1815
                 04 Family Actinodendronidae
                 05 Family Actinoscyphiidae Stephenson, 1920
                 06 Family Actinostolidae Carlgren, 1932
                 07 Family Aiptasiidae Carlgren, 1924
                 08 Family Aliciidae Duerden, 1895
                 09 Family Andresiidae Stephenson, 1922
                 10 Family Andwakiidae
                 11 Family Aurelianiidae
                 12 Family Bathyphelliidae Carlgren, 1932
                 13 Family Boloceroididae Carlgren, 1924
                 14 Family Condylanthidae Stephenson, 1922
                 15 Family Diadumenidae Stephenson, 1920
                 16 Family Edwardsiidae Andres, 1881
                 17 Family Exocoelactiidae
                 18 Family Galatheanthemidae Carlgren, 1956
                 19 Family Gonactiniidae Carlgren, 1893
                 20 Family Halcampidae Andres, 1883
                 21 Family Halcampoididae Appellöf, 1896
                 22 Family Halcuriidae Carlgren, 1918 (1897)
                 23 Family Haliactiidae
                 24 Family Haliplanellidae see Family Diadumenidae Stephenson, 1920
                 25 Family Haloclavidae Verrill, 1899
                 26 Family Homostichanthidae
                 27 Family Hormathiidae Carlgren, 1932
                 28 Family Isanthidae Carlgren, 1938
                 29 Family Isophellidae
                 29 Family Isophelliidae see Family Isophellidae
                 30 Family Limnactiniidae Carlgren, 1921
                 31 Family Liponematidae Hertwig, 1882
                 32 Family Metridiidae Carlgren, 1893
                 33 Family Minyadidae
                 34 Family Nemanthidae Carlgren, 1940
                 35 Family Nevadneidae Carlgren, 1925
                 36 Family Octineonidae Fowler, 1894
                 37 Family Phymanthidae Andres, 1883
                 38 Family Sagartiidae Gosse, 1858
                 39 Family Sagartiomorphidae Carlgren, 1934
                 40 Family Stichodactylidae Andres, 1883
                 41 Family Thalassianthidae Milne Edwards, 1857