[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Notacanthiformes Goodrich, 1909 - halosaurs and deep-sea spiny eels
         Family Notacanthidae Rafinesque, 1810 - deepsea spiny eels
           Genus Polyacanthonotus Bleeker, 1874
             Polyacanthonotus rissoanus (De Filippi & Verany, 1857)