Ancestor
Pachyophiidae
Madtsoiidae
Dinilysia
Leptotyphlopidae
Typhlopidae
Anomalepididae
Anomochilus
Uropeltidae
Cylindrophis
Anilius
Xenopeltis
Loxocemus
Erycinae
Pythoninae
Boinae
Ungaliophiinae
Tropidophiinae
Bolyeriidae
Acrochordidae
Colubroidea