(Plesiochelyidae,(Xinjiangchelys,(Sinemydidae,(Chelydridae,(Chelomacryptodira,((Toxochelys,(Ctenochelys,(Osteopygis,(Puppigerus,Chelonia_mydas)))),((Santanachelys,(Notochelone,(Desmatochelys,(Chelosphargis,Protostega_gigas)))),(Corsochelys,(Mesodermochelys,Dermochelys)))))))));