fossil marine animal genera Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Chordata Bateson, 1885 - chordates see Phylum Chordata Bateson, 1885
       Class †Acanthodii Owen, 1846
         1 Order †Climatiiformes Berg, 1940
         2 Order †Ischnacanthida Berg, 1940 see Order Ischnacanthiformes Berg, 1940
         3 Order †Acanthodida Berg, 1940 see Order Acanthodiformes Berg, 1940
         4 Order †uncertain