(Sphenodon,((Iguanidae,(Agamidae,Chamaeleonidae)),((Xantusiidae,(Gekkonidae,Pygopodidae),(Dibamidae,Amphisbaenia)),((Lacertidae,(Teiidae,Gymnophthalmidae)),(Cordylidae,Scincidae)),(Anguidae,(Xenosauridae,(Heloderma,(Lanthanotus,Varanus,Serpentes)))))));