[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 Cucumariidae Ludwig, 1894
           01 Genus Abyssocucumis Heding, 1942
           02 Genus Aslia Rowe, 1970
           03 Genus Cucumaria Blainville, 1830
           04 Genus Havelockia Pearson, 1903
           05 Genus Neocnus Cherbonnier, 1972, nom. illeg.
           06 Genus Ocnus Forbes, 1841
           07 Genus Paracucumaria Panning, 1949
           08 Genus Pawsonia Rowe, 1970
           09 Genus Pentamera Stimpson, 1848
           10 Genus Pseudothyone Panning, 1949
           11 Genus Stereoderma Ayres, 1851
           12 Genus Thyone Oken, 1815
           13 Genus Leptopentacta Clark, 1938