Vertebrata Cuvier, 1812 - vertebrates Class Agnatha Cope, 1889 [paraphyletic] Subclass †Pteraspidomorphi Goodrich, 1909 see Class Pteraspidomorphi Goodrich, 1909 Order †Thelodontida see Order Thelodonti Jaekel, 1911 Family †Katoporidae Karatajūtė-Talimaa, 1970 see Family Katoporodidae Märss, Wilson & Thorsteinsson, 2002