[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Class Crinoidea Miller, 1821 - sea lilies and feather stars
       Order Bourgueticrinida (Sieverts-Doreck, 1953)
         Family Bathycrinidae Bather, 1899
           1 Genus Bathycrinus Thomson, 1872
           2 Genus Monachocrinus Clark, 1919