ProganochelysPleurodiraKayentachelysKallokibotionPleurosternidaeBaenidaePlesiochelyidaeXinjiangchelysMeiolaniidaeOtwayemysSinemysDraco_slash_HangaOrdosemysTMP_87_dot_2_dot_1ChelydridaeChelonioideaTrionychoideaTestudinoideaOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Gaffney_etal_1998a