(hypothetical_ancestor,(Proganochelys,(Proterochersis,Palaeochersis,Australochelys,(Kayentachelys,(Kallokibotion,Dorsetochelys,Portlandemys,Plesiochelys,Xinjiangchelys,Hangaiemys,Platysternon,Mongolemys_elegans,Go_polyphemus,Chrysemys,Geoclemmys,Sandownia,Peltochelys,(Meiolania,Mongolochelys),(Platychelys,Caribemys,Notoemys,(Elseya,(Chelodina,Phrynops)),(Erymnochelys,Pelomedusa,Podocnemis)),(Pleurosternon,(Glyptops,Dinochelys)),(Neurankylus,(Trinitichelys,(Plesiobaena,(Boremys,(Baena,Chisternon))))),(Solnhofia,(Thalassemys,Santanachelys)),(Judithemys,(Dracochelys,(Sinemys,Ordosemys))),(Toxochelys,((Caretta,Chelonia),(Mesodermochelys,Dermochelys))),(Protochelydra,(Macroclemmys,Chelydra)),(Emarginachelys,Hoplochelys,(Baptemys,Dermatemys),(Staurotypus,(St_odoratus,Kinosternon))),(Adocus,(Zangerlia_neimongolensis,Basilemys)),((Ap_spinifera,Lis_punctata),(Kizylkumemys_khoratensis,(Kizylkumemys_schulzi,(Anosteira_pulchra,Anosteira_ornata,Anosteira_manchuriana,Anosteira_maomingensis,Anosteira_mongoliensis,Allaeochelys_lingnanica,Allaeochelys_crassesculpta,Allaeochelys_delheidi,Allaeochelys_parayrei,Allaeochelys_magnifica,Allaeochelys_libyca,Carettochelys_insculpta)))))))));