[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass †Thelodontomorphi Jaekel, 1911 [monotypic]
         Class †Thelodonti Jaekel, 1911
           Order †Sandiviiformes
             Family †Sandiviidae Karatajūtė-Talimaa & Märss, 2004
               1 Genus †Sandivia Karatajūtė-Talimaa, 1997