Protomarctus_optatusTomarctus_hippophagaTomarctus_brevirostrisAelurodon_asthenostylusAelurodon_montanensisAelurodon_mcgrewiAelurodon_stirtoniAelurodon_feroxAelurodon_taxoidesOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Wang_etal_2004a