Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Subphylum Pelmatozoa Leuckart, 1848
       Class Crinoidea Miller, 1821 - sea lilies and feather stars
         Genus Antedon Fréminville, 1811
         Genus Comantheria Clark, 1909
         Genus Metacrinus Carpenter, 1882
         Genus Neometra Clark, 1912
         Genus Oligometra Clark, 1908
         Genus Zygometra Clark, 1907