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Temporal range: Late Cretaceous to Recent[citation needed]
Natrix natrix (Marek Szczepanek).jpg
Grass snake, Natrix natrix
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Infraorder: Alethinophidia
Nopcsa, 1923
Common names: advanced snakes.

The Alethinophidia are an infraorder of snakes that includes all snakes other than blind snakes and thread snakes. Currently, 15 families are recognized, including 9 subfamilies and 316 genera.[1]

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