Youngina
Squamata
Gephyrosaurus
Diphydontosaurus
Planocephalosaurus
Palaeopleurosaurus
Clevosaurus
Brachyrhinodon
Polysphenodon
Homoeosaurus
Kallimodon
Sapheosaurus
Sphenodon
Cynosphenodon
Toxolophosaurus
Eilenodon