[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 Comatulida Clark, 1908
         Family Pentametrocrinidae
           1 Genus Pentametrocrinus Clark, 1908
           2 Genus Thaumatocrinus Carpenter, 1883