Alethinophidia
Alethinophidia sugeen infraordena bat da.

Familiak 
 Acrochordidae Bonaparte, 1831
 Aniliidae Stejneger, 1907
 Anomochilidae Cundall, Wallach & Rossman, 1993
 Boidae Gray, 1825
 Bolyeriidae Hoffstetter, 1946
 Colubridae Oppel, 1811
 Cylindrophiidae Fitzinger, 1843
 Elapidae Boie, 1827
 Homalopsidae Bonaparte, 1845
 Lamprophiidae Fitzinger, 1843
 Loxocemidae Cope, 1861
 Pareatidae Romer, 1956
 Pythonidae Fitzinger, 1826
 Tropidophiidae Brongersma, 1951
 Uropeltidae Müller, 1832
 Viperidae Oppel, 1811
 Xenodermatidae Gray, 1849
 Xenopeltidae Bonaparte, 1845

Kanpo estekak 

Serpentes
Alethinophidia sugeen infraordena bat da . Familiak Acrochordidae Bonaparte , Aniliidae Stejneger , Anomochilidae Cundall , Wallach & Rossman , Boidae Gray , Bolyeriidae Hoffstetter , Colubridae Oppel , Cylindrophiidae Fitzinger , Elapidae Boie , Homalopsidae Bonaparte , Lamprophiidae Fitzinger , Loxocemidae Cope , Pareatidae Romer , Pythonidae Fitzinger , Tropidophiidae Brongersma , Uropeltidae Müller , Viperidae Oppel , Xenodermatidae Gray , Xenopeltidae Bonaparte , Kanpo estekak Serpentes