Youngina
Squamata
Gephyrosaurus
Diphydontosaurus
Planocephalosaurus
Palaeopleurosaurus
Brachyrhinodon
Polysphenodon
Clevosaurus_mcgilli
Clevosaurus_bairdi
Clevosaurus_petilus
Clevosaurus_hudsoni
Homoeosaurus
Kallimodon
Sapheosaurus
Pamizinsaurus
Sphenodon
Cynosphenodon
Toxolophosaurus
Eilenodon