Infraphylum [Gnathostomata] Gegenbaur, 1874 - jawed vertebrates see Superclass Gnathostomata Gegenbaur, 1874
   Megaclass Osteichthyes Huxley, 1880 see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
     Superclass Sarcopterygii Romer, 1955
       Class Dipnotetrapodomorpha see [unranked] Dipnotetrapodomorpha Nelson, 2006
         Subclass Dipnomorpha Ahlberg, 1991 [monotypic] see [unranked] Dipnomorpha Ahlberg, 1991
           Superorder Ceratodontae [monotypic] see Superorder Dipnoi Müller, 1844
             1 Order Ceratodontiformes Berg, 1940 - living lungfishes and their fossil relatives