[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 Aspidochirotida Brandt, 1835
         Family Synallactidae Ludwig, 1894
           01 Genus Bathyplotes Östergren, 1896
           02 Genus Benthothuria Perrier, 1898
           03 Genus Gephyrothuria Koehler & Vaney, 1905
           04 Genus Mesothuria Ludwig, 1894
           05 Genus Meseres Ludwig, 1893, nom. illeg.
           06 Genus Paelopatides Théel, 1886
           07 Genus Paroriza Hérouard, 1902
           08 Genus Pseudostichopus Théel, 1886
           09 Genus Scotothuria Hansen, 1978
           10 Genus Synallactes Ludwig, 1893