[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 Dactylochirotida Pawson & Fell, 1965
         Family Ypsilothuriidae Heding, 1942
           1 Genus Echinocucumis Sars, 1859
           2 Genus Ypsilothuria Perrier, 1886