After Carroll, 1988, Cloutier & Ahlberg, 1996, and Lloyd, Wang & Brusatte, 2012

<==o “Post-Devonian dipnoans” [Ceratodiformes sensu lato?]
   |--o †Conchopomidae Berg, 1940
   |  |-- †Nielsenia nordica Lehman, 1959
   |  `--o †Conchopoma Kner, 1868 [Conchiopsis, Peplorhina] Penn. L. Perm. NA. L. Perm. Eu.
   |     |-- †C. gadiforme Kner, 1868
   |     |-- †C. sp. [L. Perm. CEu.] [Marshall, 1988]
   |     |-- †C. arctatum (Cope, 1877)
   |     |-- †C. edesi Denison, 1969
   |     `-- †C. exanthematicum (Cope, 1873a)
   `--+--o †Ganopristodus Traquair, 1881 sensu Schultze, 1992 [Uronemus Agassiz, 1844 (non Uronemus Rafinesque, 1815, a polychete (not recognized by World Register of Marine Species))] Miss. Eu. ?NA. [Uronemidae Traquair, 1890]
      |  |-- †G. splendens Traquair, 1881
      |  `-- †G. lobatus (Traquair 1871) [Uronemus lobatus Traquair 1871]
      `==o †Sagenodontidae Woodward, 1891
         |--o †Megapleuron Gaudryi, 1881; Penn. NA.
         |  |-- †M. rochei Gaudryi, 1881
         |  `-- †M. zangerli Schultze, 1977
         `--+--o †Sagenodus Owen, 1867 [Proceratodus; Petalodopsis; Yonodus] Miss. Penn. Eu. Miss. L. Perm. NA. 
            |  |-- †S. browniae Cope, 1897
            |  |-- †S. conchiolepis Cope 1897
            |  |-- †S. foliatus Cope 1897
            |  |-- †S. lacovianus Cope 1897
            |  |-- †S. magister Cope 1897
            |  |-- †S. occidentalis Newberry 1866
            |  |-- †S. quincunciatus Cope 1897
            |  |-- †S. reticulatus Newberry 1870
            |  |?- †S. carlinvillensis Romer & Smith, 1934
            |  |-- †S. copeanus Williston, 1899
            |  |-- †S. cristatus Eastman, 1903
            |  |-- †S. gurleianus Cope, 1897
            |  |-- †S. inaequalis Owen, 1867 [type?]
            |  |?- †S. obliquus
            |  |?- †S. periprion Cope 1878
            |  |?- †S. porrectus Cope 1878
            |  |-- †S. quinquecostatus Traquair, 1883
            |  |?- †S. serratus (Newberry, 1875)
            |  `-- †S. textilis Hay, 1899
            `--+--o †Ctenodontidae Woodward, 1891
               |  |-- †Tranodis castrensis (Romer & Smith, 1934) Miss. NA.
               |  `--+-- †Straitonia waterstoni Thomson, 1965; Miss. Eu.
               |     `--o †Ctenodus Agassiz, 1838 [Campylopleuron, Proctenodus, Rhadamista] Miss. Penn. Eu. NA. Miss. Aus. 
               |        |-- †C. cristatus Agassiz, 1838
               |        |-- †C. fossatus Cope, 1877
               |        |-- †C. gurleyanus Cope, 1877
               |        |-- †C. heterolophus Cope, 1883
               |        |-- †C. interruptus Barkas, 1869
               |        |-- †C. murchisoni Ward, 1843
               |        |?- †C. tardus Fritsch, 1889
               |        |-- †C. radiatus Newberry, 1889
               |        |-- †C. vabasensis Cope, 1883
               |        |-- †C. wagneri Newberry, 1899
               |        |-- †C. williei Smithson, Richards & Clack, 2016
               |        |-- †C. whitropei Smithson, Richards & Clack, 2016
               |        `-- †C. roberti Smithson, Richards & Clack, 2016
               `--+-- †Eoctenodus microsoma Hills, 1929 [Dipterus microsoma Hills, 1931; Eoctenodus microsoma Hills; Long, 1987]; U.Dev. Aust.
                  `-- ?Ceratodiformes [incl. Lepidosireniformes; Ceratodontidae sensu Carroll, 1988] (Recent Lungfishes; nykykeuhkokalat)

PDD incertae sedis:

Proceratodus Penn.-L.Perm. NAm.
        †Proceratodus hlavini Zidek, 1975
    †Xylognathus Smithson, Richards & Clack, 2016; E. Carb. WEu.
        †Xylognathus macrustenus Smithson, Richards & Clack, 2016
    †Ballagadus Smithson, Richards & Clack, 2016; E. Carb. WEu.
        †Ballagadus rossi Smithson, Richards & Clack, 2016
        †Ballagadus caustrimi Smithson, Richards & Clack, 2016
    †Coccovedus Smithson, Richards & Clack, 2016; E. Carb. WEu.
        †Coccovedus celatus Smithson, Richards & Clack, 2016
    †Occludus Smithson, Richards & Clack, 2016; E. Carb. WEu.
        †Occludus romeri (Thomson, 1965)

Reference(s):