After Carroll, 1988, Milner, 1994 and Clack, 1998

<==o Tetrapoda sensu lato [Stegocephali Laurin, 1998a] (maaselkärankaiset; tetrapods = vertebrates with four recognizible limbs)
   |--o †Elginerpentonidae
   |  |-- †Elginerpeton pancheni Ahlberg, 1995
   |  `-- †Obruchevichthys gracilis Vorobyeva, 1977
   `--+?- †Densignathus rowei Daeschler, 2000
      |--+?- †Metaxygnathus denticulus Campbell & Bell, 1977
      |  `-- †Ventastega curonica Ahlberg, Luksevics & Lebedev, 1994 [Panderichthys bystrovi Gross, 1941, in partim]
      `--+-- †Acanthostega gunnari [Acanthostegidae]
         `--+--o †Ichthyostegidae
            |  |-- †Ichthyostegidae gen. et sp. indet. [U. Dev. WEu. (Belgium)] [Clément et al., 2004]
            |  `--o †Ichthyostega Säve-Söderbergh, 1932 [Ichthyostegopsis]
            |     |-- †I. stensioi Säve-Söderbergh, 1932 [I. kochi]
            |     |-- †I. eigili [Ichthyostegopsis wimani]
            |     `-- †I. watsoni
            `--+-- †Hynerpeton bassetti Daeschler, Shubin, Thomson & Amaral, 1994
               |?- †Antlerpeton clarkii Thomson, Shubin & Poole, 1998
               `--+?-+?-o †Adelogyrinidae
                  |  |  |-- †Adelogyrinus
                  |  |  |-- †Adelospondylus
                  |  |  |-- †Dolichopareias
                  |  |  `-- †Palaeomolgophis
                  |  |?- †Acherontiscus [Acherontiscidae]
                  |  `?- †Aistopoda Miall, 1875 [Aïstopoda Miall, 1875] (aistopods; aistopodit)
                  `--+?-o †Whatcheeriidae Clack, 2002
                     |  |-- †Ossinodus pueri Warren & Turner, 2004
                     |  `--+-- †Whatcheeria deltae Lombard & Bolt, 1995
                     |     `-- †Pederpes finneyae Clack, 2002
                     |?- †Nectridae
                     `--o Tetrapoda sensu stricto [the last common ancestor of modern amphibians and amniotes]
                        |-- Batrachomorpha [Amphibia]
                        `--+-- †Baphetoidea [Loxommotoidea]
                           `-- Reptiliomorpha (vesikalvollismaiset tetrapodit; amniote-like tetrapods)

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