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