[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Family Bathysciadiidae Dautzenberg & Fischer, 1900
         Genus Bathysciadium Dautzenberg & Fischer, 1899
           1 Bathysciadium costulatum (Locard, 1898)
           2 Bathysciadium xylophagum Warén & Carrozza, in Warén, 1997