[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 Seguenziidae Verrill, 1884
         Genus Basilissopsis Dautzenberg & Fischer, 1897
           Basilissopsis watsoni (Dautzenberg & H. Fischer, 1897)