<==o †Emblomeri Cope, 1884 [Anthracosauroideae Watson, 1929]
   |-- †Eoherpeton watsoni Panchen, 1975 [Eoherpetontidae Panchen, 1975]
   `--+--o †Anthracosaurus Huxley, 1863 [Anthracosauridae Cope, 1875]
      |  |-- †A. lancifer (Newberry, 1873) [Rhizodus lancifer Newberry, 1873]
      |  `-- †A. russelli Huxley, 1863
      `--+--o †Proterogyrinidae
         |  |?- †Papposaurus Watson, 1914
         |  `--o †Proterogyrinus Romer, 1970 [Mauchchunkia Hotton III, 1970]
         |     |-- †P. scheelei Romer, 1970 [Mauchchunkia bassa Hotton III, 1970]
         |     `-- †P. pancheni Smithson, 1986
         `--+?- †Silvanerpeton miripedes Clack, 1994
            |--o †Eogyrinidae Watson, 1929
            |  |?- †Aversor dmitrievi Gubin, 1985
            |  |-- †Calligenethlon watsoni Steen, 1934
            |  |-- †Carbonerpeton Klembara, 1985
            |  |-- †Diplovertebron punctatum Fritsch, 1879
            |  |-- †Eogyrinus attheyi Watson, 1926
            |  |-- †Leptophractus obsoletus Cope, 1873a
            |  |--o †Neopteroplax Romer, 1963
            |  |  |-- †N. conemaughensis Romer, 1963
            |  |  `-- †N. relictus Romer, 1963
            |  |-- †Palaeoherpeton decorum (Watson, 1926) Panchen, 1970 [Palaeogyrinus decorus Watson, 1926]
            |  |-- †Pholiderpeton scutigerum Huxley, 1896
            |  `-- †Pteroplax cornutus Hancock & Atthby, 1868
            `--o †Archeriidae Kuhn, 1965
               |--o †Archeria Case, 1918
               |  |-- †A. crassidisca (Cope, 1884) [Cricotus crassidiscus Cope, 1884; Archeria crassidisca (Cope, 1884); Cricotus hypantricus Cope, 1886; Archeria robinsoni Case, 1915; Archeria victori Stovall, 1948]
               |  |?- †A. victori Stovall, 1948
               |  `?- †A. robinsoni Case, 1915
               |--o †Cricotus Cope, 1875
               |  |-- †C. heleroclitus Cope, 1875
               |  |-- †C. discophorus Cope 1877
               |  `-- †C. gibsonii Cope, 1877
               `-- †Spondylerpeton spinatum Moodie, 1912 [Spondylerpeton mazonensis (nomen nudum?)]

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