Colubridae

Subfamiliae:

Sibynophiinae (Dunn, 1928)
Natricinae (Bonaparte, 1838)
Pseudoxenodontinae (McDowell, 1987)
Dipsadinae (Bonaparte, 1838)
Grayiinae (Günther, 1858)
Calamariinae
Ahaetullinae (Figueroa, McKelvy, Grismer, Bell & Lailvaux, 2016)
Colubrinae (Oppel, 1811)