OutgroupToxochelys_latiremisMexichelys_coahuilaensisCtenochelys_acris_et_stenoporus_et_tenuitesta_et_Lophochelys_natatrixArgillochelys_cuneicepsEochelone_brabanticaErquelinnesia_gosseletiPacifichelys_urbinai_et_hutchisoniPuppigerus_camperiChelonia_mydasNatator_depressusSyllomus_aegyptiacusEretmochelys_imbricataCaretta_carettaLepidochelys_olivacea_et_kempiiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Parham_et_Pyenson_2010a