Classification of Olson 1947
Cl. Reptilia Laurenti 1768 [reptile]
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Subcl. Eureptilia Olson 1947 [eureptile]
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Infracl. Diapsida Osborn 1903 [diapsid]
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Or. Archosauria Cope 1869 [archosaur]
Superor. Lepidosauria Haeckel 1866 [lepidosaur]
Infracl. †Euryapsida Colbert 1945
Infracl. Synapsida Osborn 1903 [synapsid]
Invalid names: Captorhina Olson 1947 [empty], Parapsida Williston 1917 [empty]
Subcl. †Parareptilia Lawrence 1868 [parareptile]
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Or. Chelonia Latreille 1800 [turtle]
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Subor. †Amphichelydia Lydekker 1889
Subor. Cryptodira Cope 1868
Subor. Pleurodira Cope 1865 [sideneck turtle]
Invalid names: Diadecta Olson 1947 [empty]