Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum †Conodonta Eichenberg, 1930 see Subclass Conodonta Eichenberg, 1930
       Class †Cavidonti see Subclass Conodonta Eichenberg, 1930
         1 Order †Proconodontida Sweet, 1988
         2 Order †Belodellida Sweet, 1988
         3 Order †Protopanderodontida
         4 Order †Panderodontida Sweet, 1988
         5 Order †Prioniodontida Dzik
         6 Order †Prioniodinida Sweet, 1988
         7 Order †Ozarkodinida Dzik