Classification of the order Placodontia

Or. †Placodontia Cope 1871 [placodont]
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G. †Chelyposuchus Romer 1966
Fm. †Cyamodontidae Nopcsa 1923
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G. †Cyamodus von Meyer 1863
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†Cyamodus hildegardis Peyer 1931
†Cyamodus kuhnschnyderi Nosotti and Pinna 1993
†Cyamodus muensteri Agassiz 1834
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Invalid names: Cyamodus laticeps Owen 1859 [synonym]
†Cyamodus orientalis Wang et al. 2019
†Cyamodus rostratus Münster 1839
†Cyamodus tarnowitzensis Gürich 1884
Subor. †Cyamodontoidea Nopcsa 1923
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Unr. †Cyamodontida Nopsca 1923
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G. †Henodus Huene 1936
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†Henodus chelyops Huene 1936
Invalid names: Psephodermatidae Nopcsa 1923 [empty]
Unr. †Placochelyida Romer 1956
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G. †Macroplacus Schubert and Klempnauer 1975
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†Macroplacus raeticus Schubert and Klempnauer 1975
G. †Placochelys Jaekel 1902
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†Placochelys placodonta Jaekel 1902
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Invalid names: Placodus placodonta Jaekel 1902 [synonym]
G. †Protenodontosaurus Pinna 1990
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G. †Psephoderma von Meyer 1858
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†Psephoderma alpinum Meyer 1858
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Invalid names: Placochelys malanchinii Boni 1948 [synonym], Placochelys stoppanii Pinna 1980 [synonym], Placodus zitteli Amman 1878 [synonym]
†Psephoderma anglicum Meyer 1864
†Psephoderma sculptata Rieppel 2002
Invalid names: Placochelyanus Pinna 1976 [synonym]
Invalid names: Macroplacidae Rieppel 2000 [empty], Protenodontosauridae Rieppel 2000 [empty]
Fm. †Placochelyidae Jaekel 1910
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G. †Glyphoderma Zhao et al. 2008
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†Glyphoderma kangi Zhao et al. 2008
G. †Psephochelys Li and Rieppel 2002
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†Psephochelys polyosteoderma Li and Rieppel 2002
G. †Psephosaurus Fraas 1896
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†Psephosaurus suevicus Fraas 1896
G. †Priscochelys Karl 2005
G. †Psephosauriscus Rieppel 2002
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†Psephosauriscus mosis Brotzen 1957
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Invalid names: Psephosaurus mosis Brotzen 1956 [replaced]
†Psephosauriscus rhombifer Rieppel 2002
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Invalid names: Psephosaurus rhombifer Haas 1959 [replaced]
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Invalid names: Psephosaurus sinaiticus Haas 1959 [replaced]
Invalid names: Psephosaurus picardi Brotzen 1956 [nomen dubium]
Subor. †Henodontida Kuhn 1961
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Fm. †Henodontidae von Huene 1936
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G. †Chelyoposuchus Kuhn 1939
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G. †Parahenodus Miguel Chaves et al. 2018
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†Parahenodus atancensis Miguel Chaves et al. 2018
G. †Negevodus Mazin 1986
Fm. †Paraplacodontidae Peyer and Kuhn-Schnyder 1955
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G. †Paraplacodus Peyer 1931
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†Paraplacodus broilii Peyer 1931
G. †Pararcus Klein and Scheyer 2014
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†Pararcus diepenbroeki Klein and Scheyer 2014
Superfm. †Placodontoidea Nopcsa 1923
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Fm. †Placodontidae Cope 1871
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G. †Placodus Agassiz 1833
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†Placodus duplicatus Fraas 1896
†Placodus gigas Agassiz 1833
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Invalid names: Anomosaurus strunzi Huene 1905 [synonym], Omphalosaurus peyeri Maisch and Lehmann 2002 [synonym], Placodus antiquior Huene 1936 [synonym], Placodus hypsiceps Meyer 1863 [synonym], Placodus quinmolaris Braun 1863 [synonym]
†Placodus inexpectatus Jiang et al. 2008
Invalid names: Anomosaurus Huene 1902 [synonym], Crurosaurus Huene 1902 [synonym], Crurosaurus problematicus Huene 1902 [nomen dubium], Placodus aethiops Meyer 1863 [nomen nudum], Placodus andriani Agassiz 1839 [nomen dubium], Placodus angustus Meyer 1863 [nomen nudum], Placodus bathygnathus Owen 1859 [nomen dubium], Placodus bombidens Owen 1858 [nomen dubium], Placodus gracilis Jurcsak 1976 [nomen dubium], Placodus impressus Agassiz 1833 [nomen dubium], Placodus pachygnathus Owen 1859 [nomen dubium], Placodus rugosus Meyer 1863 [nomen nudum]
Invalid names: Chelyoposuchinae Kuhn 1946 [empty]
Invalid names: Hemilopadidae Jaekel 1910 [empty], Placodontida Peyer and Kun-Schnyder 1955 [empty], Priscochelys hegnabrunnensis Karl 2005 [nomen dubium]