Subphylum [Vertebrata] Cuvier, 1812 - vertebrates
   Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
     ?Family †Kannathalepididae Märss & Gagnier, 2001
       1 Genus †Kannathalepis Märss & Gagnier, 2001
       2 Genus †Frigorilepis Märss, Wilson & Thorsteinsson, 2002 [monotypic]