Classification of Ivakhnenko 2008
Subcl. †Parareptilia Lawrence 1868 [parareptile]
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Superor. †Cheloniamorpha Ivakhnenko 1997
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Or. †Pareiasaurida Ivakhnenko 1997
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Subor. †Nycteroleterina Ivakhnenko 1997
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Superfm. †Lanthanosuchoidea Efremov 1940
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Fm. †Lanthaniscidae Ivakhnenko 2008
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Fm. †Lanthanosuchidae Efremov 1940
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G. †Chalcosaurus Meyer 1866
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†Chalcosaurus lukjanovae Ivakhnenko 1980
†Chalcosaurus rossicus Meyer 1866
G. †Lanthanosuchus Efremov 1940
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†Lanthanosuchus watsoni Efremov 1946
Invalid names: Lanthanosuchus qualeni Efremov 1940 [nomen nudum]
Superfm. †Nycteroleteroidea Romer 1956
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Fm. †Nycteroleteridae Romer 1956
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Invalid names: Bashkyroleterinae Ivakhnenko 1997 [empty], Nycteroleterinae Romer 1956 [empty]
Invalid names: Rhipaeosauridae Chudinov 1955 [empty], Tokosauridae Tverdokhlebova and Ivakhnenko 1984 [empty]
Invalid names: Elginioidea Cope 1896 [empty]
Invalid names: Pareiasaurina Ivakhnenko 1997 [empty]