Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Cnidaria Hatschek, 1888 - cnidarians
     Class Anthozoa Ehrenberg, 1831
       Subclass Ceriantipatharia see Subclass Zoantharia de Blainville, 1830
         Order Ceriantharia
           Genus Arachnanthus Carlgren, 1912
           Genus Botruanthus McMurrich, 1910
           Genus Ceriantheomorphe Carlgren, 1931
           Genus Ceriantheopsis Carlgren, 1912
           Genus Cerianthus Chiaje, 1830
           Genus Pachycerianthus Roule, 1904