[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Echinodermata Bruguière, 1789 - echinoderms
     Class Holothuroidea (de Blainville, 1834) - sea cucumbers
       Order Dendrochirotida Grube, 1840
         Family Psolidae Burmeister, 1837
           1 Genus Psolidium Ludwig, 1886
           2 Genus Psolus Oken, 1815