Cladogram showing relationships of extant members of the Sauria. Numbered items are:
1. Tuatara
2. Lizards
3. Snakes
4. Crocodiles
5. Birds
"Lizards" are paraphyletic. Branch lengths do not indicate divergence times.
From the left: Heads of the Indian gharial (Gavialis gangeticus), American Alligator (Alligator mississippiensis), and an American Crocodile (Crocodylus acutus).
Cladogram showing relationships of extant members of the Sauria. Numbered items are:
Suborder Lacertilia (Sauria) - (Lizards)
