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 Echinodermata Bruguière, 1789 - echinoderms
           Subphylum Crinozoa Matsumoto, 1929 see Infraphylum Crinozoa Matsumoto, 1929
             Class Crinoidea Miller, 1821 - sea lilies and feather stars
               Subclass Articulata Miller, 1821
                 Order Bourgueticrinida (Sieverts-Doreck, 1953)
                   Family Bathycrinidae Bather, 1899
                     1 Genus Rhizocrinus Sars, 1865
                     2 Genus Conocrinus Orbigny, 1850
                     3 Genus Democrinus Perrier, 1883
                     4 Genus Bythocrinus Döderlein, 1912
                     5 Genus Bathycrinus Thomson, 1872
                     6 Genus Monachocrinus Clark, 1919
                     7 Genus Ilycrinus Danielssen & Koren, 1877