outgroupOTHER_CHELONIAProterochersis_robustaAustralochelys_africanusPalaeochersis_talampayensisProganochelys_quenstedtiOdontochelys_semitestaceaSimosaurusAnthodon_serrariusOwenetta_kitchingorumMEGAPLEURODIRAMRPMaximum ParsimonyBased on reanalysis of the original matrix.Brocklehurst_etal_2015af