Synapsida_slash_DiapsidaProganochelysAustralochelysPalaeochersisProterochersisMegapleurodiraKayentachelysKallokibotionMongolochelysPleurosternidaeBaenidaeXinjiangchelysSolnhofiaPlesiochelyidaeMeiolaniaNinjemysNiolamiaChubutemysSinemysOtwayemysHangaiemysDracochelysOrdosemysJudithemysChelydridaeChelonioideaTrionychoideaTestudinoideaCompsemys_victaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Lyson_et_Joyce_2011aa