(Synapsida_slash_Diapsida,(Proganochelys,(Australochelys,(Palaeochersis,((Proterochersis,Megapleurodira),(Kayentachelys,(Mongolochelys,((Kallokibotion,(Baenidae,(Pleurosternidae,Compsemys_victa))),((Xinjiangchelys,((Chubutemys,(Otwayemys,(Niolamia,(Meiolania,Ninjemys)))),(Sinemys,(Ordosemys,(Dracochelys,((Hangaiemys,Judithemys),((Chelydridae,Chelonioidea),(Trionychoidea,Testudinoidea)))))))),(Solnhofia,Plesiochelyidae))))))))));