Classification of Watson 1919

Or. †Labyrinthodontia Owen 1859
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Subor. †Embolomeri
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Unr. †Rachitomi Cope 1882
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Fm. †Actinodontidae Lydekker 1885
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G. †Actinodon Gaudry 1866
G. †Chelydosaurus Fritsch 1885
G. †Osteophorus Meyer 1856
G. †Sclerocephalus Goldfuss 1847
Fm. †Archegosauridae von Meyer 1857
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G. †Archegosaurus Goldfuss 1847
G. †Cochleosaurus Fritsch 1885
G. †Discosaurus Credner 1883
Fm. †Dissorophidae Boulenger 1902
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Subfm. †Aspidosaurinae Case 1910
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G. †Alegeinosaurus Case 1911
G. †Aspidosaurus Broili 1904
G. †Broiliellus Williston 1914
Subfm. †Dissorophinae Boulenger 1902
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G. †Cacops Williston 1910
G. †Dissorophus Cope 1895
G. †Zygosaurus Eichwald 1848
Fm. †Eryopidae Cope 1882
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G. †Eryops Cope 1877
G. †Onchiodon Geinitz 1861
G. †Parioxys Cope 1878
Fm. †Lydekkerinidae Watson 1919
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G. †Lydekkerina Broom 1915
G. †Melosaurus von Meyer 1857
G. †Platyops Twelvetrees 1880
Fm. †Rhinesuchidae Watson 1919
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G. †Laccocephalus Watson 1919
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Laccocephalus insperatus Watson 1919
G. †Rhinesuchus Broom 1908
G. †Sparagmites Fritsch 1885
Fm. †Trematopsidae Williston 1910
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G. †Trematops Williston 1909
Fm. †Trimerorachidae Cope 1882
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G. †Trimerorachis Cope 1878
Fm. †Zatrachydae Williston 1910
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G. †Dasyceps Huxley 1859
G. †Platyhystryx Williston 1911
G. †Zatrachys Cope 1878
Invalid names: Acanthostomatidae Steen [synonym]
Invalid names: Achelomidae Watson 1919 [empty]
Unr. †Stereospondyli von Zittel 1887
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Fm. †Brachyopidae Broom 1915
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G. †Batrachosuchus Broom 1903
G. †Bothriceps Huxley 1859
G. †Brachyops Owen 1855
G. †Plagiosaurus Jaekel 1914
G. †Plagiosternum Fraas 1896
Fm. †Capitosauridae Watson 1919
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G. †Capitosaurus Münster 1836
G. †Cyclotosaurus Fraas 1889
Fm. †Mastodonsauridae Lydekker 1885
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G. †Mastodonsaurus Jaeger 1828
Fm. †Metoposauridae Watson 1919
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G. †Anaschima Branson 1905
G. †Metoposaurus Lydekker 1890
Fm. †Trematosauridae Watson 1919
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G. †Aphaneramma Woodward 1904
G. †Lonchorhynchus Wiman 1910
G. †Lyrocephalus Wiman 1914
G. †Platystega Wiman 1914
G. †Tertrema Wiman 1914
G. †Trematosaurus Burmeister 1849
G. †Trematosuchus Watson 1919
Subor. †Rhachitomi Cope 1882
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Fm. †Micropholidae Watson 1919
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G. †Micropholis Huxley 1859