After Laurin & Reisz, 1997, Anderson & Reisz, 2003, and Vallin & Laurin, 2004

<==o Amphibia Gray, 1825 sensu Laurin, 1998a, and Vallin & Laurin, 2004 [Lepospondyli Zittel, 1888 sensu Laurin & Reisz, 1997]
   |--+--o †Adelogyrinidae Huene, 1954
   |  |  |-- †Adelogyrinus simorhynchus Watson, 1928
   |  |  |-- †Adelospondylus watsoni Carroll, 1967
   |  |  |-- †Dolichopareias disjectus Watson, 1928
   |  |  `-- †Palaeomolgophis scoticus Brough & Brough, 1967
   |  |?- †Acherontiscus caledoniae Carroll, 1969 [Acherontiscidae Carroll, 1967]
   |  `-- †Aistopoda Miall, 1875 [Aïstopoda Miall, 1875] (aistopods; aistopodit)
   `--+-- †Nectridea Miall, 1875
      `--o †“Microsauria” Dawson, 1863 [paraphyletic]
         |?- †Odonterpeton triangulare Moodie, 1909b [Odonterpentontidae Carroll & Gaskill, 1978] [paraphyletic Microbrachomorpha Carroll & Gaskill, 1978] [not treated by Vallin & Laurin]
         |?-o †Hapsidopareiontidae Daly, 1973
         |  |?- †Ricnodon Fritsch, 1883
         |  |-- †Saxonerpeton geinitzi Carroll & Gaskill, 1978
         |  `--+-- †Hapsidopareion lepton Daly, 1973
         |     `-- †Llistrofus pricei Carroll & Gaskill, 1978
         |?-o †Tuditanidae Cope, 1875 [paraphyletic Tuditanomorpha Carroll & Gaskill, 1978]
         |  |-- †Asaphestera intermedia Steen 1934
         |  |-- †Boii crassidens Carroll, 1966
         |  |-- †Crinodon limnophyes (Steen, 1938) Carroll & Gaskill, 1978
         |  `-- †Tuditanus punctulatus Cope, 1871b
         |--+-- †Utaherpeton franklini Carroll, Bybee & Tidwell, 1991 [paraphyletic Microbrachomorpha]
         |  |-- †Microbrachis pelikani Fritsch, 1876 [taxonomic history] [Microbrachidae Fritsch, 1883] [paraphyletic Microbrachomorpha]
         |  `-- †Paramicrobrachis fritschi Kuhn, 1959
         `--o †“Tuditanomorpha” [paraphyletic Microsauria]
            |--o †Ostodolepididae Romer, 1945
            |  |?- †Ostodolepis brevispinatus Williston, 1913
            |  |-- †Micraroter erythrogeios Carroll & Gaskill, 1978
            |  |-- †Nannaroter mckinziei Anderson, Scott & Reisz, 2009
            |  |-- †Pelodosotis elongatum Carroll & Gaskill, 1978
            |  `-- †Tambaroter carrolli Henrici, Martens, Berman & Sumida, 2011
            `--+--o †Pantylidae Case, 1911
               |  |?- †Trachystegos megalodon Carroll, 1966 [not treated by Vallin & Laurin]
               |  |-- †Pantylus cordatus Cope, 1881
               |  `--+-- †Stegotretus agyrus Berman, Eberth & Brinkman, 1988
               |     `-- †Sparodus validus Fritsch, 1876 [not treated by Vallin & Laurin]
               `--+--o †Gymnarthridae Case, 1910
                  |  |?- †Elfridia bulbidens Thayer, 1985 [not treated by Vallin & Laurin]
                  |  |?- †Hylerpeton dawsoni Owen, 1862
                  |  |?- †Leiocephalikon problematicum Steen, 1934 [not treated by Vallin & Laurin]
                  |  |?-o †Pariotichus Cope, 1878 [not treated by Vallin & Laurin]
                  |  |  |-- †P. brachyops Cope, 1878
                  |  |  |?- †P. aduncus
                  |  |  `?- †P. isolemus
                  |  |?- †Bolterpeton carrolli Anderson & Reisz, 2003 [alternative position 1]
                  |  `--+--o †Euryodus Olson, 1939
                  |     |  |-- †E. bonneri Schultze & Foreman, 1981
                  |     |  |-- †E. dalyae Carroll & Gaskill, 1978
                  |     |  `-- †E. primus Olson, 1939
                  |     `--+?- †Bolterpeton carrolli Anderson & Reisz, 2003 [alternative position 2]
                  |        `--o †Cardiocephalus Broili, 1904
                  |           |-- †C. peabodyi Carroll & Gaskill, 1978
                  |           `-- †C. sternbergi Broili, 1904
                  `--+-- †Rhynchonkos stovalli (Olson, 1970) Schulze & Foreman. 1981 [Goniorhynchus stovalli Olson, 1970 (non Goniorhynchus Hampson, 1896, a genus of moths (Lepidoptera: Crambidae))] [Goniorhynchidae Carroll & Gaskill, 1978] [paraphyletic Microbrachomorpha]
                     `--+--o †Brachystelechidae [Batropetidae] [paraphyletic Microbrachomorpha]
                        |  |-- †Batropetes fritschi (Geinitz & Deichmüller, 1882) Carroll & Gaskill, 1971 [Brachystelechus fritschi Carroll & Gaskill, 1978; Batropetes fritschi Carroll, 1991; Batropetes truncatus Carroll & Gaskill, 1971] [Batropetidae]
                        |  `--+-- †Quasicaecilia texana Carroll, 1990 [Quasicaecelia lapsus calami]
                        |     `-- †Carrolla craddocki Langston & Olsen, 1986
                        `--+-- Lissamphibia Haeckel, 1866 sensu Vallin & Laurin, 2004 [only Gymnophiona Rafinesque, 1814 sensu Anderson et al., 2008] (modern amphibians; nykysammakkoeläimet)
                           `--o †Lysorophia Romer, 1930
                              |?-o †Cocytinidae Cope, 1875 [Molgophidae (Cope, 1875a, in partim); Romer, 1966; Lysorophidae (Williston, 1908a in partim) Romer, 1966]
                              |  |-- †Pleuroptyx clavatus Cope, 1875 [Molgophis cf. brevicostatus (Cope, 1875a) Schwarz, 1908 (in partim)]
                              |  `--o †Brachydectes Cope, 1868 [Cocytinus Cope, 1871]
                              |     |-- †B. elongatus Wellstead, 1991 [Lysorophus tricarinatus Cope, 1877, in partim]
                              |     `-- †B. newberryi Cope, 1868 [Cocytinus gyrinoides Cope, 1871b; Molgophis wheatleyi (Cope, 1874) Romer, 1930]
                              `--o †Lysorophidae Williston, 1908a
                                 |?- †Megamolgophis agostini Romer, 1952
                                 |?- †Lysorocephalus gwyneddensis Huene & Bock 1954
                                 |--o †Lysorophus Cope, 1877
                                 |  |-- †L. dunkardensis Romer, 1952
                                 |  `-- †L. tricarinatus Cope, 1877
                                 `-- †Molgophis macrurus Cope, 1868 [M. brevicostatus Cope, 1875a]

Other “tudinomorphs”

Trihecatontidae Vaughn, 1972
        †Trihecaton howardinus Vaughn, 1972

Reference(s):

 

Special thanks to:

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