Struthio_camelusAnseranas_semipalmataCasuarius_casuariusCoragyps_atratusMusophaga_violaceaOrtalis_cinereicepsAlligator_mississippiensisCaiman_yacareCrocodylus_cataphractusGavialis_gangeticusMelanosuchus_nigerOsteolaemus_tetraspisPaleosuchus_palpebrosusTomistoma_schlegeliiOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Harshman_etal_2003a