Leipoa_ocellataCrypturellus_souiNothura_maculosaEudromia_elegansCrypturellus_obsoletusAnhima_cornutaAnseranas_semipalmataApteryx_australisApteryx_oweniiMegalapteryx_didinusDinornis_robustusPachyornis_geranoidesPachyornis_elephantopusPachyornis_australisAnomalopteryx_didiformisEmeus_crassusEuryapteryx_curtusAepyornisMullerornisStruthio_camelusPterocnemia_pennataRhea_americanaCasuarius_bennettiCasuarius_casuariusDromaius_novaehollandiaeLithornisOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Worthy_et_Scofield_2012a