(Younginia,(Squamata,(Gephyrosaurus,(Diphydontosaurus,(Planocephalosaurus,((Homoeosaurus,(Clevosaurus_wangi,(Brachyrhinodon,Clevosaurus_hudsoni))),(((Pamizinsaurus,(Oenosaurus,((Zapatadon,(Cynosphenodon,Sphenodon)),(Opisthias,(Toxolophosaurus,(Eilenodon,Priosphenodon)))))),(Palaeopleurosaurus,Pleurosaurus)),(Kallimodon,Sapheosaurus))))))));