After Holmes, Carroll & Reisz, 1998, Yates & Warren, 2000, Sidor et al., 2005, and Steyer et al., 2006

<==o †Edopoidea Romer, 1945 sensu Steyer et al., 2006
   |-- †Edops craigi [Edopidae]
   `--o †Cochleosauridae Broili, in Zittel & Broili, 1923
      |?- †Gaudrya latistoma Fritsch, 1885 (1889)
      |?- †Macrerpeton huxleyi (Cope, 1874a)
      |-- †Procochleosaurus jarrowensiss
      `--o †Cochleosaurinae Broili, in Zittel & Broili, 1923 sensu Steyer et al., 2006
         |-- †Adamanterpeton ohionensis
         `--+--o †Cochleosaurus
            |  |-- †C. florensis
            |  `-- †C. bohemicus
            `--+-- †Nigerpeton ricqlesi Sidor et al., 2005
               `--o †Chenoprosopus
                  |-- †C. milleri
                  `-- †C. lewisi

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