[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
       Order Notacanthiformes Goodrich, 1909 - spiny eels
         Family Halosauridae Günther, 1868 - halosaurs
           Genus Halosaurus Johnson, 1864 - halosaur
             1 Halosaurus johnsonianus Vaillant, 1888
             2 Halosaurus ovenii Johnson, 1864