Organism
Animalia
Bilateria
Deuterostomia
Chordata
Vertebrata
Gnathostomata
Tetrapoda
Reptilia
[Anapsida]
[Archosauria]
[Diapsida]
[Lepidosauria]
Squamata
[Lacertilia]
[Sauria]
Serpentes
Alethinophidia