Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Class Agnatha Cope, 1889 [paraphyletic]
     Subclass †Pteraspidomorphi Goodrich, 1909 see Class Pteraspidomorphi Goodrich, 1909
       Order †Thelodontida see Order Thelodonti Jaekel, 1911
         Family †Loganiidae Karatajute-Talimaa, 1978, nom. illeg. see Family Loganelliidae Karatajūtė-Talimaa, 1997, nom. nud.