After Paton, Smithson, & Clack, 1999

<==o Reptiliomorpha
   |-- †Tulerpeton curtum
   |?- †Eldeceeon rolfei
   |?- †Caerorhachis bairdi [Caerorhachidae]
   `--+-- †Anthracosauria
      `--+?- †Solenodonsaurus janenschi Broili, 1924 [Solenodonsauridae]
         |?- †Tokosaurus [Tokosauridae]
         |?-o †Chroniosuchidae
         |  |-- †Chroniosaurus
         |  `-- †Chroniosuchus
         |-- †Seymouriamorpha Watson, 1917
         `--o Amniotamorpha
            |?- Microsauria sensu Paton, Smithson, & Clack, 1999 [for more common location, see Basal Lepospondyli]
            |?- †Lysorophia
            `--o “Amniotaformes”
               |?- †Diadectomorpha
               `-- Amniota Haeckel, 1866 (vesikalvolliset selkärankaiset)

Reference(s):

 

Special thanks to:

Dols, J. H. M., for gathering additional information and species.