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 †Loganelliiformes Turner, 1991
      Count: [†*] †2f;3g;5s
         Family †Loganelliidae Karatajūtė-Talimaa, 1997
        Count: [†*] †2g;4s
           Genus †Loganelliaᵀ Turner, 1991
          Count: [†*] †3s
             †Loganellia prolata Märss, Wilson & Thorsteinsson, 2002
            Count: -