Phylum [Vertebrata] (Lamarck, 1801)
   Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
     Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
       Order Neoselachii Compagno, 1977 see Division Neoselachii Compagno, 1977
         1 Genus Scapanorhynchus Woodward, 1889
         2 Genus †Sclerorhynchus Woodward, 1889
         3 Genus †Spathobathis nom. null.