Chordata Bateson, 1885 - chordates
   Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
     Subclass Actinopteri Cope, 1871 see Class Actinopteri Cope, 1871
       Superorder Ganoidei (Agassiz)
         Order †Pycnodonti see Order Pycnodontiformes Berg, 1937
           118 Family †Pycnodontidae Agassiz, 1833
           119 Family †Semionotidae Woodward, 1890, "nom. praeval."