[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     1 Class Crinoidea Miller, 1821 - sea lilies and feather stars
     2 Class Asteroidea Blainville, 1830 - sea stars
     3 Class Ophiuroidea Gray, 1840 - brittle stars and basket stars
     4 Class Echinoidea (Leske, 1778) - sea urchins and sand dollars
     5 Class Holothuroidea (de Blainville, 1834) - sea cucumbers