Subphylum [Vertebrata] Cuvier, 1812 - vertebrates
Count: [†*] 2c; †5o;18f;32g;35s
   Class Agnatha Cope, 1889
  Count: [†*] †5o;16f;29g;33s
     Subclass †Thelodonti Kiaer, 1932
    Count: [†*] †5o;16f;29g;33s
       Order †Furcacaudiformes Wilson & Caldwell, 1998 - forktail thelodonts
      Count: [†*] †2f;6g;6s
         Family †Furcacaudidae Wilson & Caldwell, 1998
        Count: [†*] †4g;2s [28 Apr 2017]
           Genus †Cometicercus Wilson & Caldwell, 1998
          Count: -