[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Cnidaria Hatschek, 1888 - cnidarians
     Anthozoa Ehrenberg, 1831
       Hexacorallia Haeckel, 1866 - sea anemones and true corals see Subclass Zoantharia de Blainville, 1830
         Order Actiniaria - sea anemones
           01 Family Actinernidae Stephenson, 1922
           02 Family Actiniidae Rafinesque, 1815
           03 Family Actinoscyphiidae Stephenson, 1920
           04 Family Actinostolidae Carlgren, 1932
           05 Family Aiptasiidae Carlgren, 1924
           06 Family Aliciidae Duerden, 1895
           07 Family Andresiidae Stephenson, 1922
           08 Family Andvakiidae Danielssen, 1890 see Family Andwakiidae
           09 Family Aurelianiidae
           10 Family Bathyphelliidae Carlgren, 1932
           11 Family Boloceroididae Carlgren, 1924
           12 Family Condylanthidae Stephenson, 1922
           13 Family Diadumenidae Stephenson, 1920
           14 Family Edwardsiidae Andres, 1881
           15 Family Gonactiniidae Carlgren, 1893
           16 Family Halcampidae Andres, 1883
           17 Family Halcampoididae Appellöf, 1896
           18 Family Halcuriidae Carlgren, 1918 (1897)
           19 Family Haliactiidae
           20 Family Haloclavidae Verrill, 1899
           21 Family Hormathiidae Carlgren, 1932
           22 Family Iosactiidae
           23 Family Isophellidae
           24 Family Kadosactidae
           25 Family Limnactiniidae Carlgren, 1921
           26 Family Liponematidae Hertwig, 1882
           27 Family Metridiidae Carlgren, 1893
           28 Family Octineonidae Fowler, 1894
           29 Family Phymanthidae Andres, 1883
           30 Family Sagartiidae Gosse, 1858