Classification of Longrich et al. 2012
Subor. Ophidia Latreille 1804 [snake]
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G. †Najash Apestiguía and Zaher 2006
Invalid names: Coniophidae Hoffstetter 1955 [empty]
Unr. Serpentes Linnaeus 1758 [snake]
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Unr. Alethinophidia Nopcsa 1923
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G. †Eupodophis Rage and Escuillié 2001
G. †Haasiophis Tchernov et al. 2000
Unr. Macrostomata Ritgen 1828
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Fm. Acrochordidae Bonaparte 1840
Subfm. Boinae Gray 1825
Superfm. Colubroidea Oppel 1811
Subfm. Erycinae Bonaparte 1825 [sand boa]
G. Loxocemus Cope 1861 [Mexican burrowing pythons]
Subfm. Pythoninae Fitzinger 1826 [python]
Fm. Tropidophiidae Cope 1894 [dwarf boa]
G. Xenopeltis Reinwardt 1827
Invalid names: Bolyeriidae [empty], Ungaliophiidae Zaher 1994 [empty]
G. †Pachyrhachis Haas 1979
G. †Dinilysia Woodward 1901
Fm. †Madtsoiidae Hoffstetter 1961
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G. †Sanajeh Wilson et al. 2010
G. †Wonambi Smith 1976
G. †Yurlunggur Scanlon 1992
Infraor. Scolecophidia Duméril and Bibron 1844