[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
           Family Halcuriidae Carlgren, 1918 (1897)
             1 Genus Carlgrenia Stephenson, 1918